{"product_id":"busch-fig-411ccc-clean-cut-concave-cup-bur-kit-20-piece-1-00-2-30mm","title":"Busch Fig. 411CCC Clean Cut Concave Cup Kit of 20 Burs 1.00mm-2.30mm","description":"\u003cp\u003eA cup bur rounds and finishes the tip of a prong after a stone is set. \u003cstrong\u003eBusch Fig. 411CCC clean cut concave cup burs\u003c\/strong\u003e are among the most precise jeweler's burs available, engineered to ultra-high tolerances from tungsten vanadium steel, and this kit spans ten sizes from 1.00 mm to 2.30 mm with two burs of each size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCCC\u003c\/strong\u003e stands for \u003cstrong\u003eC\u003c\/strong\u003elean \u003cstrong\u003eC\u003c\/strong\u003eut \u003cstrong\u003eC\u003c\/strong\u003eoncave. \u003cstrong\u003eClean cut\u003c\/strong\u003e means the cutting edges are open, so metal shavings clear from inside the bur without marring the surface being cut. \u003cstrong\u003eConcave\u003c\/strong\u003e is the traditional cup shape that leaves a rounded, finished top on the prong, which is what prong finishing and setting work calls for. The kit is supplied in a plastic bur box with 48 holes for 3\/32 in shank burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTungsten vanadium steel machined to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eClean cut geometry keeps cutting edges open for efficient chip expulsion\u003c\/li\u003e\n\u003cli\u003eConcave cup profile produces a smooth, rounded prong top\u003c\/li\u003e\n\u003cli\u003eCovers 10 sizes from 1.00 mm through 2.30 mm\u003c\/li\u003e\n\u003cli\u003eTwo burs of each size, 20 burs total\u003c\/li\u003e\n\u003cli\u003eSupplied in a plastic bur box with 48 holes for 3\/32 in shank burs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eA concave cone shape is available separately in the \u003cem\u003eBusch Fig. 411C\u003c\/em\u003e and \u003cem\u003eBusch Fig. 411CT\u003c\/em\u003e bur styles. Individual Fig. 411CCC burs in these sizes are also available separately.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582856233174,"sku":"118.029","price":74.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411ccc-clean-cut-concave-cup-kit-of-20-burs-1-00mm-2-30mm-otto-frei.jpg?v=1719956830","url":"https:\/\/www.ottofrei.com\/it\/products\/busch-fig-411ccc-clean-cut-concave-cup-bur-kit-20-piece-1-00-2-30mm","provider":"Otto Frei","version":"1.0","type":"link"}