Features:
Good Performance and long life
Excellent for making clean and accurate hole on glass and tile
Works better with a standard electric drill
Cut perfect circles: Suitable for Marble, Granite, Tile Ceramic, Stone, Rebar Concrete etc.
Wide Application: This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials and only needs water for lubrication.
Specifications:
Material: Steel
Top Shank Diameter: 10mm/ 0.39inch;Tapping Diameter: 100mm/ 3.94inch
Note:
Start your hole diagonally, make a round trace and then hold drill straight
Always use lubrication (water), otherwise the diamond core drill will burn
Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.
Use Coolant. Minimum pressure.