4.0mm Diamond Core Drill - 3mm Shank

You can use core drills to cut holes in ceramic, tile and glass without chipping or cracking.

Our diamond-coated core drills have a 3mm (1/8 in.) shank, medium-fine grit and are made of stainless steel on which diamond particles have been electroplated.    

• 4.00 millimeters in diameter
• 3 millimeter (1/8 inch) shank
• Medium-fine grit

Diamond drill bits are designed to be used at 5,000-15,000 rpms for best results.

These are our Premium Range core drills made in Taiwan

Always use a lubricant or water when working with diamond coated instruments