{"product_id":"supra-mk-3-4-soft-natural-bristle-brushes-unmounted-1-8-hole-pack-12","title":"Pack-12 Supra MK 3\/4\" Soft Natural Brushes-Unmounted With 1\/8\" Hole","description":"\u003cp\u003eThe Supra MK 3\/4\" Soft unmounted natural bristle brushes deliver premium performance for jewelers and metalsmiths working on flat, curved, small, and hard-to-reach surfaces. Made in the USA with solid steel ring construction, these miniature brushes are built for durability and consistent results. Brush filaments are permanently anchored in the solid steel ring and uniformly distributed for even wear across the working surface.\u003c\/p\u003e\u003cp\u003eThese brushes are made with natural animal hair and are available in Soft, Medium, and Stiff bristle grades to match your application requirements. The 1\/8\" diameter center hole is designed for use with specific hub adapters and screw mandrels—see the Notes section for important compatibility guidance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSold by the dozen.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePremium natural animal hair bristles—Soft grade\u003c\/li\u003e\n\u003cli\u003eSolid steel ring construction for long-lasting durability\u003c\/li\u003e\n\u003cli\u003eFilaments permanently anchored and uniformly distributed for even wear\u003c\/li\u003e\n\u003cli\u003eSuitable for flat, curved, small, and hard-to-reach surfaces\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003cli\u003eUnmounted design with 1\/8\" center hole\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBrush Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBristle Type\u003c\/th\u003e\n\u003ctd\u003eNatural animal hair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBristle Grade\u003c\/th\u003e\n\u003ctd\u003eSoft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHole Diameter\u003c\/th\u003e\n\u003ctd\u003e1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eSolid steel ring, unmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Operating Speed\u003c\/th\u003e\n\u003ctd\u003e25,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e12 (one dozen)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThe 1\/8\" center hole is designed for use with hub adapters \u003cstrong\u003e147.257\u003c\/strong\u003e or \u003cstrong\u003e147.259\u003c\/strong\u003e, or with screw mandrels using 1\/8\" diameter screws \u003cstrong\u003e143.160\u003c\/strong\u003e or \u003cstrong\u003e143.162\u003c\/strong\u003e. \u003cem\u003eUsing this hole size with thinner 3\/32\" diameter screw mandrels results in a sloppy fit.\u003c\/em\u003e Natural bristle brushes with 3\/32\" diameter holes are also available separately.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSupra does not manufacture extra soft bristle brushes. Extra soft bristle brushes are made in China.\u003c\/em\u003e\u003c\/p\u003e","brand":"Supra","offers":[{"title":"Default Title","offer_id":43584375455958,"sku":"116.650","price":15.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/pack-12-supra-mk-34-soft-natural-brushes-unmounted-with-18-hole-otto-frei.jpg?v=1719956245","url":"https:\/\/www.ottofrei.com\/products\/supra-mk-3-4-soft-natural-bristle-brushes-unmounted-1-8-hole-pack-12","provider":"Otto Frei","version":"1.0","type":"link"}