1Imported silicon carbide, high-accuracy grinding technology, strongly resistant to wear, fast and efficient opening. 2The drill body comes with high-temperature wax, which can cool the lubrication bit and achieve no water punch. 3Anti-skid shank, suitable for drilling equipment such as hand drill angle grinder. 4Suitable for full ceramic tile, vitrified tile, ordinary glass, ceramic, marble, granite, microcrystalline stone, quartz stone. 5We provide 5 kinds of drill bit of different sizes for you to choose from.