{"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\u003e\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. This kit spans a full range of sizes from 1.00 mm to 2.30 mm, giving bench jewelers and stone setters a comprehensive selection of cup burs in a single, organized plastic container.\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, allowing metal shavings to be easily expelled from inside the bur without marring the surface being cut. \u003cstrong\u003eConcave\u003c\/strong\u003e refers to the traditional cup bur shape that leaves a rounded, finished top on the prong—ideal for prong finishing and setting work. A Concave Cone shape is also available separately in the Busch 411C and Busch 411CT bur styles.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTungsten vanadium steel construction 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 in a single kit\u003c\/li\u003e\n\u003cli\u003e2 burs of each size included—20 burs total\u003c\/li\u003e\n\u003cli\u003eStored and supplied in an organized plastic container\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003e411CCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStyle\u003c\/th\u003e\n\u003ctd\u003eClean Cut Concave Cup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eTungsten vanadium steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e1.00 mm – 2.30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e20 burs (2 of each size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes Included\u003c\/th\u003e\n\u003ctd\u003e10 sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003ePlastic container\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eB118.421 — Busch 411CCC \u003cstrong\u003e1.00 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.421.5 — Busch 411CCC \u003cstrong\u003e1.10 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.422 — Busch 411CCC \u003cstrong\u003e1.20 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.422.5 — Busch 411CCC \u003cstrong\u003e1.30 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.423 — Busch 411CCC \u003cstrong\u003e1.40 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.423.5 — Busch 411CCC \u003cstrong\u003e1.50 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.424 — Busch 411CCC \u003cstrong\u003e1.60 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.425 — Busch 411CCC \u003cstrong\u003e1.80 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.426 — Busch 411CCC \u003cstrong\u003e2.10 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003cli\u003eB118.426.5 — Busch 411CCC \u003cstrong\u003e2.30 mm\u003c\/strong\u003e (qty 2)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThe Concave Cone cup bur shape is available separately in the \u003cem\u003eBusch Fig. 411C\u003c\/em\u003e and \u003cem\u003eBusch Fig. 411CT\u003c\/em\u003e styles. Individual 411CCC burs in these sizes are also available separately from OttoFrei.\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\/products\/busch-fig-411ccc-clean-cut-concave-cup-bur-kit-20-piece-1-00-2-30mm","provider":"Otto Frei","version":"1.0","type":"link"}