{"id":4363232641072,"title":"N28A Ground Valve Sleeve .631-.700\"","handle":"n28a-ground-valve-sleeve-631-700","description":"\u003cp\u003eThese steel sleeves have a standard length of 3\" and are used to straighten bent and out of round pistons. The sleeves have been bored and then honed to the exact sizes used when the valve casings were manufactured. This is a forming die. They are not adjustable.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0397\/5557\/files\/N2858_SIZES.pdf?v=1717596332\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003cstrong\u003eSIZE CHART\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eThe recommended procedure for use:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRemove the valve cap, finger button, stem and guide from the piston.\u003cbr\u003eSelect the proper diameter sleeve and push the piston all the way in so the main body of the piston is completely covered by the sleeve.\u003cbr\u003eHold this complete assembly in the palm of your hand.\u003cbr\u003eUse a \u003cstrong\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f5-rawhide-mallet?variant=1101999508\"\u003eF5 rawhide\u003c\/a\u003e\u003c\/strong\u003e or \u003cstrong\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f11canvas-hammer?variant=1101999640\"\u003eF11 canvas mallet\u003c\/a\u003e\u003c\/strong\u003e and strike the outside of the steel sleeve many times, rotating the sleeve in your hand as you go, so hammer blows strike the sleeve all the way around.\u003cbr\u003eContinue this procedure until the piston works freely in the sleeve.\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eSLEEVES ARE NOT ADJUSTABLE ORDER THE EXACT SIZE.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTO ORDER THE CORRECT SIZE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder by the O.D. of the piston. Example: Yamaha .664 Due to the differences in manufacturing over the years it is highly RECOMMENDED to measure the valve piston.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eThese mandrels are divided into 3 size groups:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e(\u003ca title=\"N28A Sleeve Mandrel\" href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28a-size?variant=13708255940\"\u003eN28A\u003c\/a\u003e Part # for sizes: .630-.700, \u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28c-size?variant=13708259204\"\u003eN28C\u003c\/a\u003e:.701-.885, \u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28d-size?variant=13708266564\"\u003eN28D\u003c\/a\u003e: .888-1.400\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n28a_brand?variant=13704527108\"\u003e\u003cstrong\u003eN28A For cornet and trumpet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cbr\u003e\u003ca title=\"n28c\" href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28c-ground-valve-casing-701-885?_pos=1\u0026amp;_sid=5d279ede7\u0026amp;_ss=r\"\u003e\u003cspan\u003e\u003cstrong\u003eN28C For alto horn, valve trombone, baritone and euphonium\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\u003ca title=\"n28d\" href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28d-ground-valve-sleeve-886-1-400?_pos=1\u0026amp;_sid=d37e213aa\u0026amp;_ss=r\"\u003e\u003cspan\u003e\u003cstrong\u003eN28D For sousaphone, Tuba, Bari\u003c\/strong\u003e\u003c\/span\u003e \u003c\/a\u003e\n\u003c\/h4\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e","published_at":"2019-11-26T05:46:42-05:00","created_at":"2019-11-26T06:36:18-05:00","vendor":"Ferree's Tools Inc","type":"Brasswind","tags":["General Tools"],"price":6195,"price_min":6195,"price_max":7500,"available":true,"price_varies":true,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":40185442009136,"title":"0.645","option1":"0.645","option2":null,"option3":null,"sku":"N28A-645","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.645","public_title":"0.645","options":["0.645"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":27,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442041904,"title":"0.649","option1":"0.649","option2":null,"option3":null,"sku":"N28A-649","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.649","public_title":"0.649","options":["0.649"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":37,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442074672,"title":"0.65","option1":"0.65","option2":null,"option3":null,"sku":"N28A-650","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.65","public_title":"0.65","options":["0.65"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":11,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442107440,"title":"0.651","option1":"0.651","option2":null,"option3":null,"sku":"N28A-651","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.651","public_title":"0.651","options":["0.651"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":31,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442140208,"title":"0.657","option1":"0.657","option2":null,"option3":null,"sku":"N28A-657","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.657","public_title":"0.657","options":["0.657"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":50,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442172976,"title":"0.658","option1":"0.658","option2":null,"option3":null,"sku":"N28A-658","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.658","public_title":"0.658","options":["0.658"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":42,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442205744,"title":"0.66","option1":"0.66","option2":null,"option3":null,"sku":"N28A-660","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.66","public_title":"0.66","options":["0.66"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":35,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442238512,"title":"0.661","option1":"0.661","option2":null,"option3":null,"sku":"N28A-661","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.661","public_title":"0.661","options":["0.661"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":24,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442271280,"title":"0.664","option1":"0.664","option2":null,"option3":null,"sku":"N28A-664","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.664","public_title":"0.664","options":["0.664"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":22,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442304048,"title":"0.665","option1":"0.665","option2":null,"option3":null,"sku":"N28A-665","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.665","public_title":"0.665","options":["0.665"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":29,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442336816,"title":"0.668","option1":"0.668","option2":null,"option3":null,"sku":"N28A-668","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.668","public_title":"0.668","options":["0.668"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":40,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442369584,"title":"0.672","option1":"0.672","option2":null,"option3":null,"sku":"N28A-672","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.672","public_title":"0.672","options":["0.672"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":50,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442402352,"title":"0.673","option1":"0.673","option2":null,"option3":null,"sku":"N28A-673","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.673","public_title":"0.673","options":["0.673"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":49,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442435120,"title":"0.674","option1":"0.674","option2":null,"option3":null,"sku":"N28A-674","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.674","public_title":"0.674","options":["0.674"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":48,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442467888,"title":"0.68","option1":"0.68","option2":null,"option3":null,"sku":"N28A-680","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.68","public_title":"0.68","options":["0.68"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":47,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442500656,"title":"0.682","option1":"0.682","option2":null,"option3":null,"sku":"N28A-682","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.682","public_title":"0.682","options":["0.682"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":43,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442533424,"title":"0.684","option1":"0.684","option2":null,"option3":null,"sku":"N28A-684","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.684","public_title":"0.684","options":["0.684"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":48,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40185442566192,"title":"0.685","option1":"0.685","option2":null,"option3":null,"sku":"N28A-685","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - 0.685","public_title":"0.685","options":["0.685"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":44,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":31315957448752,"title":"Special Size in Note","option1":"Special Size in Note","option2":null,"option3":null,"sku":"N28AS","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - Special Size in Note","public_title":"Special Size in Note","options":["Special Size in Note"],"price":7500,"weight":0,"compare_at_price":null,"inventory_quantity":39,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40989527638064,"title":".662","option1":".662","option2":null,"option3":null,"sku":"n28a-662","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - .662","public_title":".662","options":[".662"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":48,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40989534126128,"title":".646","option1":".646","option2":null,"option3":null,"sku":"n28a-646","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - .646","public_title":".646","options":[".646"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":50,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40989547855920,"title":".666","option1":".666","option2":null,"option3":null,"sku":"n28a-666","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - .666","public_title":".666","options":[".666"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":48,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40989549199408,"title":".667","option1":".667","option2":null,"option3":null,"sku":"n28a-667","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - .667","public_title":".667","options":[".667"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":50,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":40989550084144,"title":".686","option1":".686","option2":null,"option3":null,"sku":"n28a-686","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"N28A Ground Valve Sleeve .631-.700\" - .686","public_title":".686","options":[".686"],"price":6195,"weight":0,"compare_at_price":null,"inventory_quantity":49,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N28A.jpg?v=1574884285","\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N28ACD.jpg?v=1574884346","\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7562.jpg?v=1574886439","\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7561.jpg?v=1574886472"],"featured_image":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N28A.jpg?v=1574884285","options":["Size"],"media":[{"alt":"N28A Ground Valve Sleeve","id":5786442301488,"position":1,"preview_image":{"aspect_ratio":1.333,"height":2736,"width":3648,"src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N28A.jpg?v=1574884285"},"aspect_ratio":1.333,"height":2736,"media_type":"image","src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N28A.jpg?v=1574884285","width":3648},{"alt":"N28 Ground Valve Sleeves: A-C-D","id":5786444234800,"position":2,"preview_image":{"aspect_ratio":1.333,"height":2736,"width":3648,"src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N28ACD.jpg?v=1574884346"},"aspect_ratio":1.333,"height":2736,"media_type":"image","src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/N28ACD.jpg?v=1574884346","width":3648},{"alt":"N28 Sleeve in use","id":5786606764080,"position":3,"preview_image":{"aspect_ratio":1.333,"height":2736,"width":3648,"src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7562.jpg?v=1574886439"},"aspect_ratio":1.333,"height":2736,"media_type":"image","src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7562.jpg?v=1574886439","width":3648},{"alt":"N28 Sleeve in use","id":5786607157296,"position":4,"preview_image":{"aspect_ratio":1.333,"height":2736,"width":3648,"src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7561.jpg?v=1574886472"},"aspect_ratio":1.333,"height":2736,"media_type":"image","src":"\/\/www.ferreestoolsinc.com\/cdn\/shop\/products\/IMG_7561.jpg?v=1574886472","width":3648}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eThese steel sleeves have a standard length of 3\" and are used to straighten bent and out of round pistons. The sleeves have been bored and then honed to the exact sizes used when the valve casings were manufactured. This is a forming die. They are not adjustable.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0397\/5557\/files\/N2858_SIZES.pdf?v=1717596332\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003cstrong\u003eSIZE CHART\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eThe recommended procedure for use:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRemove the valve cap, finger button, stem and guide from the piston.\u003cbr\u003eSelect the proper diameter sleeve and push the piston all the way in so the main body of the piston is completely covered by the sleeve.\u003cbr\u003eHold this complete assembly in the palm of your hand.\u003cbr\u003eUse a \u003cstrong\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f5-rawhide-mallet?variant=1101999508\"\u003eF5 rawhide\u003c\/a\u003e\u003c\/strong\u003e or \u003cstrong\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/f11canvas-hammer?variant=1101999640\"\u003eF11 canvas mallet\u003c\/a\u003e\u003c\/strong\u003e and strike the outside of the steel sleeve many times, rotating the sleeve in your hand as you go, so hammer blows strike the sleeve all the way around.\u003cbr\u003eContinue this procedure until the piston works freely in the sleeve.\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eSLEEVES ARE NOT ADJUSTABLE ORDER THE EXACT SIZE.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTO ORDER THE CORRECT SIZE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder by the O.D. of the piston. Example: Yamaha .664 Due to the differences in manufacturing over the years it is highly RECOMMENDED to measure the valve piston.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eThese mandrels are divided into 3 size groups:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e(\u003ca title=\"N28A Sleeve Mandrel\" href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28a-size?variant=13708255940\"\u003eN28A\u003c\/a\u003e Part # for sizes: .630-.700, \u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28c-size?variant=13708259204\"\u003eN28C\u003c\/a\u003e:.701-.885, \u003ca href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28d-size?variant=13708266564\"\u003eN28D\u003c\/a\u003e: .888-1.400\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cspan\u003e\u003ca href=\"http:\/\/www.ferreestoolsinc.com\/products\/n28a_brand?variant=13704527108\"\u003e\u003cstrong\u003eN28A For cornet and trumpet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cbr\u003e\u003ca title=\"n28c\" href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28c-ground-valve-casing-701-885?_pos=1\u0026amp;_sid=5d279ede7\u0026amp;_ss=r\"\u003e\u003cspan\u003e\u003cstrong\u003eN28C For alto horn, valve trombone, baritone and euphonium\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\u003ca title=\"n28d\" href=\"https:\/\/www.ferreestoolsinc.com\/products\/n28d-ground-valve-sleeve-886-1-400?_pos=1\u0026amp;_sid=d37e213aa\u0026amp;_ss=r\"\u003e\u003cspan\u003e\u003cstrong\u003eN28D For sousaphone, Tuba, Bari\u003c\/strong\u003e\u003c\/span\u003e \u003c\/a\u003e\n\u003c\/h4\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eFor Sizes Not Listed or Special Sizes Please Enter Desired Size \u003c\/strong\u003e\u003cstrong\u003ein the Note Section on the Check-out Page.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e"}