Busch 4203 4 Groove Carbide Twist Drills on 3/32" Shanks .70mm-1.60mm - Kit of 10 EZ Torch Regularly file or grind off

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

Sold in convenient packs of 144 for professional shop use or resale

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

Castaldo Gold Mold Rubber (5 lb)—a professional-grade vulcanizing rubber for detailed mold reproduction

Compatible with Quatro burnout fume hood systems

Busch 4203 4 Groove Carbide Twist Drills on 3/32" Shanks .70mm-1.60mm - Kit of 10 EZ Torch Regularly file or grind offThese 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