10Pcs Diamond Coated Core Hole Saw Bit Set Tool for Tile Marble Glass Ceramic 5/6/8/10/12mm
- 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 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.