Hoopzi - 15PCS Diamond Drill Bit Drill Bits Hole Saws Hole Saws Hole Saws Diamond Saws for Glass, Ceramic, Porcelain, Marble, Tile and Granite 6-50mm

[15 sizes]: 15PCS Diameter Drill bit has 6/8/10/12/14/16/18/20/22/25/26/28/30/40/50 mm. Diamond drill bit for glass, bottles of ceramic tiles, glass blocks, ceramics, marble stone slabs, perforated granite and other hard surfaces (especially glass and ceramics). [Materials]: Diamond Drill Bit is made of high quality natural diamond sand and hardened by special electroplating technique. Note: Our drill bits are not suitable for use with microcrystalline materials of all surfaces and tiles. [Advantage]: Nickel-plated diamond dust coating provides excellent performance and cut resistance, no edge damaged, no vibration phenomenon, low cut resistance, fast opening speed, easy chip removal, etc. [Operation]: The hole with the diameter can be used to cut holes diagonally, create a circular connection and drill the hole to the right. Water should be lubricated while drilling. [Note]: Reduce the speed of the diamond tip, low puncture pressure.