Busch Fig 4205S 2 Groove Short Carbide Twist Drill on 3/32" Shanks .70mm-1.00mm - Kit of 4 Engraving & Stonesetting Combines thermal and electrical conductivity

Combines thermal and electrical conductivity testing in one instrument

Helps prevent frosting and abrasion of the clear viewing window

decimal inches

or cutting down surfaces with consistent

Add some polishing compound and you are ready to go

Busch Fig 4205S 2 Groove Short Carbide Twist Drill on 3/32" Shanks .70mm-1.00mm - Kit of 4 Engraving & Stonesetting Combines thermal and electrical conductivityRecommended for Pav 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 pav diamond setting. The short length is intentional pav 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.