12mm (1/2") CORE DRILL BIT DIAMOND COATED Jagged Edge
12mm (1/2") Diameter, DIAMOND COATED CORE DRILL BIT With Jagged EdgeDescription: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.Can be used with a standard electric drill.Size: 12mm (1/2") outside diameter, 6mm (1/4") shank, 35mm (1-1/4") Cutting Depth.Always use lubrication (water ), otherwise the diamond core drill will burn.Start your hole diagonally, make a round trace and then hold drill straight.