Features:
- Made of hardened high carbon steel
- Carbide spear point reduces cutting pressure for cleaner holes
- Cuts a perfectly round hole with out chipping or breaking
- Best result with lower RPM and good cooling with water, vinegar and turpentine
- For drilling glass,tile, ceramics
- 1/4-in.quick change hex shank fits all 1/4-in.quick change chucks and impact drivers
- For use with rotary drills only
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