Busch Fig. 156C Hart 90 Degree Burs .70mm-3.70mm Bur Size:1.80mm 60mm – 3

60mm – 3

Fine wire gives the chain a fluid drape while maintaining visual presence

The size designation refers to the diameter of the smallest curve in the stake

Extra-large 300mm diameter bowl for high-capacity production runs

Punch Sizes 1

Busch Fig. 156C Hart 90 Degree Burs .70mm-3.70mm Bur Size:1.80mm 60mm – 3These 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. Features 90 degree hart bur profile for precise angular cutting