{"product_id":"busch-fig-156c-hart-90-degree-burs-70mm-370mm-30-sizes","title":"Busch Fig. 156C Hart 90 Degree Burs .70mm-3.70mm","description":"\u003cp\u003eThese 90 degree hart burs are precision steel burs for cutting, opening, and refining angular seats and details in jewelry work. At the bench, they feel crisp and controlled where a clean edge matters. Manufactured by Busch to ultra-high precision tolerances, Fig. 156C hart burs are a reliable choice for stone setting, seat preparation, and fine detail work across a broad range of sizes.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e90 degree hart bur profile for precise angular cutting and seat preparation\u003c\/li\u003e\n\u003cli\u003eEuropean Fig. 414 \/ USA Fig. 156C pattern reference\u003c\/li\u003e\n\u003cli\u003eMade from tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eManufactured to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003e30 size options, 0.70–3.70 mm\u003c\/li\u003e\n\u003cli\u003eSold in packs of 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eBur Size (mm)\u003c\/th\u003e\n\u003cth\u003eBur Size 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