{"product_id":"carbide-inside-ring-bur-half-x-1in-quarter-shank","title":"Carbide Inside Ring Bur 1\/2\" x 1\" With 1\/4\" Shank","description":"\u003cp\u003eThese carbide inside ring burs feature a massive \u003cstrong\u003e1\/4\" shank diameter\u003c\/strong\u003e that prevents the bending commonly associated with skinny-shank cylinder burs. The trade-off is that they require a Jacobs chuck-style handpiece or a collet-style handpiece capable of accommodating 1\/4\" shanks—but the payoff is a bur that stays true and performs reliably under demanding inside-ring work.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in two cuts to suit finishing and detail work at different stages, these burs measure \u003cstrong\u003e1\/2\" x 1\"\u003c\/strong\u003e in head dimensions and are made from carbide for lasting durability and cutting performance.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4\" shank diameter\u003c\/strong\u003e resists bending during use\u003c\/li\u003e\n\u003cli\u003eCarbide construction for long-lasting cutting performance\u003c\/li\u003e\n\u003cli\u003eLarge 1\/2\" x 1\" bur head size suited for inside ring work\u003c\/li\u003e\n\u003cli\u003eAvailable in Fine and X-Fine cuts for versatile finishing applications\u003c\/li\u003e\n\u003cli\u003eCompatible with Jacobs chuck-style or collet-style handpieces that accept 1\/4\" shanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBur Head Size\u003c\/th\u003e\n\u003ctd\u003e1\/2\" x 1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e1\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBur Type\u003c\/th\u003e\n\u003ctd\u003eCylinder \/ Inside Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eCut\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120.290\u003c\/td\u003e\n\u003ctd\u003eFine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120.291\u003c\/td\u003e\n\u003ctd\u003eX-Fine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThese burs require a handpiece with a Jacobs chuck or a collet capable of accepting a \u003cstrong\u003e1\/4\" shank\u003c\/strong\u003e. Standard flex-shaft handpieces with smaller collets will not accommodate this shank size.\u003c\/p\u003e","brand":"Spearhead","offers":[{"title":"Fine","offer_id":43700344258774,"sku":"120.290","price":34.35,"currency_code":"USD","in_stock":false},{"title":"X-Fine","offer_id":43700344291542,"sku":"120.291","price":29.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/carbide-inside-ring-bur-12-x-1-with-14-shank-otto-frei.jpg?v=1719955351","url":"https:\/\/www.ottofrei.com\/products\/carbide-inside-ring-bur-half-x-1in-quarter-shank","provider":"Otto Frei","version":"1.0","type":"link"}