Busch 4203 4 Groove Carbide Twist Drills on 3/32" Shanks .70mm to 2.30mm Meco Midget Torch and change-out schedule guidance

and change-out schedule guidance

Can be broken into smaller pieces for use with compatible micro handpieces

Durable construction and heat treatment designed for long service life in daily bench use

Use steel media with detergent to burnish and work-harden pieces

professional foundation for setting oval cabochons

Busch 4203 4 Groove Carbide Twist Drills on 3/32" Shanks .70mm to 2.30mm Meco Midget Torch and change-out schedule guidanceThe Busch 4203 series carbide twist drills feature a 4 groove design optimized for cutting softer organic materials such as coral and pearls. Mounted on 3 32" shanks, these drills are available in 13 sizes ranging from 0. 70mm to 2. 30mm, making them a versatile addition to any jeweler's or craftsperson's drill collection. Sold individually, each drill delivers outstanding service life when used correctly. For best results and longest tool life, use