5/8" (16mm) Diameter, CORE DRILL BIT DIAMOND COATED
5/8" (16mm) Diameter, DIAMOND COATED CORE DRILL BITDescription: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: 5/84" (16mm) outside diameter, 5/16" (8mm) shank, 1-3/8" (35mm) 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.