MUMU 15pcs Diamond Drill Bit Drill Bits Hole Saws Hole Saws Diamond Drill Bit Diamond Hole SawTile for Glass, Ceramic, Porcelain, MarbleTile and Granite,

General description 15pcs Diamond Drill Bit Set includes various sizes ranging from 6mm to 50mm, designed for drilling precise holes in hard materials such as glass, ceramic, porcelain, marble, and granite. The drill bits are coated with high-quality diamonds, ensuring smooth cuts and high precision without broken edges. Technical specifications Sizes: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 26mm, 28mm, 30mm, 40mm, 50mm Color: Silver Usage Always use water as a lubricant to prevent the diamond drill bit from burning. Start drilling at a diagonal angle to create a round track, then keep the drill straight. Reduce drilling speed and pressure while increasing water lubrication to extend the life of the drill bits. Other information Not suitable for concrete or drilling depths greater than 1.27 cm.