Porcelain Tile Diamond Drill Bits Dry Hole Saw Set for Ceramic Marble Granite Stone,Diamond Core Bit Kit Triangle Shank Fixed on Drills,No.K1(5pcs 6mm)

【Package Includes】5 pieces dry diamond drill bits: 1/4 inch(6mm).Total Length 65mm,Diamond height 10mm,Diamond Grit #50/60,Triangle Shank 【Wax Inserted】Each dry diamond bit is embedded with wax that will melt during dry drilling to cool the cutting surface; Water can act as additional cooling to prolong the worklife of bit. 【Upgraded Design】High-quality diamond particles contribute to high efficiency and faster drilling speed; Triangular shank contributes to a more stable clamping. 【Wide Compatibility】They can be used with hand drills, angle grinders, bench drills and most other machines. Notice: If using Hammer Drill,please shut off Hammer Mode,Recommended 6000RPM,MAX RPM 11000 【Wide Compatibility】They can be used with hand drills, angle grinders, bench drills and most other machines. Notice: If using Hammer Drill,please shut off Hammer Mode,Recommended 2000-5000RPM,MAX RPM 5000,the sooner the better