Descriptions:
New accessory 42mm diamond coat hole saw drill bit
Suitable for drilling in glass, marble, ceramic tile or granite
This diamond-coated drill removes a full circle from the glass,
Tiles, marble, granite, ceramic or other materials, only need lubricate water
Can use standard electric drill (not included)
Always use lubricant (water) or diamond core will burn
Start your hole diagonally, make a circular trace, then drill straight