Busch 4203 4 Groove Carbide Twist Drills on 3/32" Shanks .70mm-1.60mm - Kit of 10 EZ Torch Tapered round profile for forming

Tapered round profile for forming bracelets across a continuous size range

Compatible with Quatro burnout fume hood systems

These cutters are intended exclusively for cutting gold and silver rings — they are not suitable for use with platinum or steel

Regularly file or grind off any mushrooming at the striking end to prevent injury from flying fragments

Busch 4203 4 Groove Carbide Twist Drills on 3/32" Shanks .70mm-1.60mm - Kit of 10 EZ Torch Tapered round profile for formingThese Busch 4203 carbide twist drills feature a 4 groove design optimized for cutting softer organic materials such as coral and pearls. Mounted on 3 32" shanks, this kit provides ten drills ranging from 0. 70mm to 1. 60mm, offering a complete size progression for fine drilling work. The 4 groove geometry delivers outstanding service life when used correctly and within recommended operating parameters. For best results and longest tool life, use these