Porcelain Tile Diamond Drill Bits Dry Hole Saw Set for Ceramic Marble Granite Stone,Diamond Core Bit Kit Triangle Shank Fixed on Drills,No.K4(6/6/8/10/12mm)

【Package Includes】5 pieces dry diamond drill bits:2pc Diameter1/4 inch(6mm),1pc 5/16 inch(8mm),1pc 3/8 inch(10mm),1pc 1/2 inch(12mm).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. 【Multiple Application】Dry drilling for Granite, Tile, Ceramic, Marble, Stone, Glass, Porcelain, Masonry, etc. 【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