This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, cer
Materials and only needs water for lubrication;Can be used with a standard electric drill.
Always use lubrication (water), otherwise the diamond core drill will burn.
Start your hole diagonally, make a round trace and then hold drill straight.
Size: 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.62", 18mm/0.7", 20mm/0.78", 2