Diamond coated drill bits 10 pcs -2.5 x 10mm

Diameter:3mm, coated length:12mm or 1/2", total length1-3/4", shank:3mm, 25g



Collet needed:1/8" or adjustable

Use Water as a coolant. This extends the life and prevents melting of the diamond shards

Use with high speed craft type drills and flex shafts.

Sea Glass/ Sea Shell estimated life 6 to 9 thin pieces.