Busch Fig 4205S 2 Groove Short Carbide Twist Drill on 3/32" Shanks .70mm-1.00mm - Kit of 4

Recommended for Pavé Work on Hard Metals

These Busch Fig 4205S short carbide twist drills are engineered for one precise application: drilling accurate holes in hard metals for pavé diamond setting. The short length is intentional — pavé holes are relatively shallow, and longer drills are prone to breaking under torsional stress. The 2-groove design actively expels material from the hole during drilling, extending drill life and maintaining accuracy.

Developed through a partnership between Busch of Germany and the world's finest micro-diamond setters, these drills are the trusted solution for professionals who set stones for leading jewelry houses. Use them on hard metals including platinum, high-karat white gold alloys, titanium, and steel, as well as gold, silver, and other alloys.

Features

• Short-length design reduces torsional stress and minimizes breakage during shallow pavé hole drilling
• 2-groove geometry expels swarf from the hole to extend drill life and maintain clean, precise results
• Solid carbide construction handles hard metals including platinum, titanium, and steel
• Consistent 3/32" shank fits standard flex shaft handpieces and drill chucks
• Suitable for gold, silver, platinum, high-karat white gold alloys, titanium, and steel
• Not for use with glass, ceramics, or gemstones

Specifications

What's Included

This kit of 4 includes one drill in each of the following sizes:

• BAU128.407 — 0.70mm
• BAU128.408 — 0.80mm
• BAU128.409 — 0.90mm
• BAU128.410 — 1.00mm

Notes

These carbide twist drills are also available for purchase individually by part number. Not recommended for use on glass, ceramics, or gemstones.

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.