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Description:New assorted 3mm to 18mm Diamond coated hole saw / drill bits (total: 10 pcs)Suitable for use in drill hole on glass, marble, tile or graniteThis diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials and only needs water for lubricationCan be used with a standard electric drill(Not Included)Always use lubrication (water ), otherwise the diamond core drill will burnStart your hole diagonally, make a round trace and then hold drill straightTotal 11 different sizes3mm / 4mm / 5mm / 6mm / 14mm / 8mm / 10mm / 16mm / 12mm / 18mm Included1 x 10pcs Diamond Coated Drill Glass Ceramic Hole Saw