{"product_id":"sioux-valve-seat-grinder-stone-holder-11-16-thread-bluefox","title":"Sioux Valve Seat Grinder Stone Holder 11\/16\" Thread with Drive Ball | Heavy Duty Replacement | Bluefox Tools | UK STOCK","description":"\u003ch3 data-section-id=\"wrzga7\" data-start=\"160\" data-end=\"223\" class=\"PDq2pG_selectionAnchorContainer\"\u003eSioux Style Valve Seat Grinder Stone Holder – 11\/16\" Thread\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"225\" data-end=\"624\"\u003eThe \u003cstrong data-start=\"229\" data-end=\"290\"\u003eBluefox Tools Sioux Style Valve Seat Grinder Stone Holder\u003c\/strong\u003e is a heavy-duty replacement holder designed for mounting valve seat grinding stones on \u003cstrong data-start=\"378\" data-end=\"422\"\u003eSioux-style valve seat grinding machines\u003c\/strong\u003e. Featuring an \u003cstrong data-start=\"437\" data-end=\"467\"\u003e11\/16\" threaded connection\u003c\/strong\u003e and an integrated \u003cstrong data-start=\"486\" data-end=\"500\"\u003edrive ball\u003c\/strong\u003e, it provides secure stone retention, accurate alignment, and reliable power transmission for precision valve seat grinding.\u003c\/p\u003e\n\u003cp data-start=\"626\" data-end=\"941\"\u003ePrecision-machined from \u003cstrong data-start=\"650\" data-end=\"681\"\u003ehigh-quality hardened steel\u003c\/strong\u003e, this stone holder is engineered to deliver excellent concentricity, reduced runout, and long-lasting durability. Its robust construction ensures consistent grinding performance during engine rebuilding, cylinder head servicing, and valve seat reconditioning.\u003c\/p\u003e\n\u003cp data-start=\"943\" data-end=\"1182\"\u003eSuitable for professional automotive machine shops, engine rebuilders, restoration specialists, and engineering workshops, this holder is an ideal replacement part for maintaining accurate valve seat geometry and superior surface finishes.\u003c\/p\u003e\n\u003ch3 data-section-id=\"19zqy0x\" data-start=\"1184\" data-end=\"1196\"\u003eFeatures\u003c\/h3\u003e\n\u003cul data-start=\"1197\" data-end=\"1663\"\u003e\n\u003cli data-section-id=\"o5nnm1\" data-start=\"1197\" data-end=\"1253\"\u003eHeavy-duty Sioux-style valve seat grinder stone holder\u003c\/li\u003e\n\u003cli data-section-id=\"11dktxh\" data-start=\"1254\" data-end=\"1312\"\u003eCompatible with Sioux-style valve seat grinding machines\u003c\/li\u003e\n\u003cli data-section-id=\"14lvcf7\" data-start=\"1313\" data-end=\"1346\"\u003e\u003cstrong data-start=\"1315\" data-end=\"1346\"\u003e11\/16\" threaded stone mount\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"hdhdjp\" data-start=\"1347\" data-end=\"1400\"\u003eIntegrated drive ball for secure power transmission\u003c\/li\u003e\n\u003cli data-section-id=\"16d94du\" data-start=\"1401\" data-end=\"1445\"\u003ePrecision-machined for excellent alignment\u003c\/li\u003e\n\u003cli data-section-id=\"12xv1up\" data-start=\"1446\" data-end=\"1497\"\u003eHardened steel construction for long service life\u003c\/li\u003e\n\u003cli data-section-id=\"1lvcnit\" data-start=\"1498\" data-end=\"1541\"\u003eLow runout for improved grinding accuracy\u003c\/li\u003e\n\u003cli data-section-id=\"1jf19ra\" data-start=\"1542\" data-end=\"1587\"\u003eSuitable for professional engine rebuilding\u003c\/li\u003e\n\u003cli data-section-id=\"5dq36h\" data-start=\"1588\" data-end=\"1627\"\u003eDurable workshop-quality construction\u003c\/li\u003e\n\u003cli data-section-id=\"14vyiun\" data-start=\"1628\" data-end=\"1663\"\u003eEasy replacement and installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1yl5694\" data-start=\"1665\" data-end=\"1683\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul data-start=\"1684\" data-end=\"1898\"\u003e\n\u003cli data-section-id=\"hq7bkd\" data-start=\"1684\" data-end=\"1710\"\u003e\n\u003cstrong data-start=\"1686\" data-end=\"1696\"\u003eBrand:\u003c\/strong\u003e Bluefox Tools\u003c\/li\u003e\n\u003cli data-section-id=\"1r6y53k\" data-start=\"1711\" data-end=\"1762\"\u003e\n\u003cstrong data-start=\"1713\" data-end=\"1730\"\u003eProduct Type:\u003c\/strong\u003e Valve Seat Grinder Stone Holder\u003c\/li\u003e\n\u003cli data-section-id=\"48r2e5\" data-start=\"1763\" data-end=\"1781\"\u003e\n\u003cstrong data-start=\"1765\" data-end=\"1775\"\u003eStyle:\u003c\/strong\u003e Sioux\u003c\/li\u003e\n\u003cli data-section-id=\"1oz39cj\" data-start=\"1782\" data-end=\"1807\"\u003e\n\u003cstrong data-start=\"1784\" data-end=\"1800\"\u003eThread Size:\u003c\/strong\u003e 11\/16\"\u003c\/li\u003e\n\u003cli data-section-id=\"14rgskp\" data-start=\"1808\" data-end=\"1836\"\u003e\n\u003cstrong data-start=\"1810\" data-end=\"1825\"\u003eDrive Type:\u003c\/strong\u003e Drive Ball\u003c\/li\u003e\n\u003cli data-section-id=\"6g56uf\" data-start=\"1837\" data-end=\"1867\"\u003e\n\u003cstrong data-start=\"1839\" data-end=\"1852\"\u003eMaterial:\u003c\/strong\u003e Hardened Steel\u003c\/li\u003e\n\u003cli data-section-id=\"jpmc1c\" data-start=\"1868\" data-end=\"1898\"\u003e\n\u003cstrong data-start=\"1870\" data-end=\"1887\"\u003eConstruction:\u003c\/strong\u003e Heavy Duty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"5t7ttf\" data-start=\"1900\" data-end=\"1920\"\u003ePackage Includes\u003c\/h3\u003e\n\u003cul data-start=\"1921\" data-end=\"1994\"\u003e\n\u003cli data-section-id=\"vrrz80\" data-start=\"1921\" data-end=\"1970\"\u003e1 × Sioux Style Valve Seat Grinder Stone Holder\u003c\/li\u003e\n\u003cli data-section-id=\"1wgki4w\" data-start=\"1971\" data-end=\"1994\"\u003eIntegrated Drive Ball\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"1996\" data-end=\"2012\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"2013\" data-end=\"2264\"\u003e\n\u003cli data-section-id=\"1jx8a45\" data-start=\"2013\" data-end=\"2034\"\u003eValve seat grinding\u003c\/li\u003e\n\u003cli data-section-id=\"1kvt1za\" data-start=\"2035\" data-end=\"2065\"\u003eCylinder head reconditioning\u003c\/li\u003e\n\u003cli data-section-id=\"1kwfnyf\" data-start=\"2066\" data-end=\"2085\"\u003eEngine rebuilding\u003c\/li\u003e\n\u003cli data-section-id=\"1dsulbt\" data-start=\"2086\" data-end=\"2112\"\u003eAutomotive machine shops\u003c\/li\u003e\n\u003cli data-section-id=\"199zgx0\" data-start=\"2113\" data-end=\"2142\"\u003eClassic vehicle restoration\u003c\/li\u003e\n\u003cli data-section-id=\"1cz4zgu\" data-start=\"2143\" data-end=\"2168\"\u003ePetrol engine servicing\u003c\/li\u003e\n\u003cli data-section-id=\"13r5fxo\" data-start=\"2169\" data-end=\"2194\"\u003eDiesel engine servicing\u003c\/li\u003e\n\u003cli data-section-id=\"687khw\" data-start=\"2195\" data-end=\"2219\"\u003eValve seat resurfacing\u003c\/li\u003e\n\u003cli data-section-id=\"335d68\" data-start=\"2220\" data-end=\"2242\"\u003eWorkshop maintenance\u003c\/li\u003e\n\u003cli data-section-id=\"11pur2f\" data-start=\"2243\" data-end=\"2264\"\u003eGeneral engineering\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"bluefoxtools","offers":[{"title":"Default Title","offer_id":63102929469811,"sku":"STONE HOLDER SIOUX","price":30.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/3626\/6099\/files\/image-2026-06-24T175222.014-2026-07-15T164226.472_1e443957-aa99-4420-882d-4a773d11c2ca.jpg?v=1784115478","url":"https:\/\/bluefoxtoolmart.com\/products\/sioux-valve-seat-grinder-stone-holder-11-16-thread-bluefox","provider":"bluefoxtools","version":"1.0","type":"link"}