【Upgraded Design】High-quality diamond particles contribute to high efficiency and faster drilling speed; Triangle shank contributes to a more stable clamping
【Wide Compatibility】Suitable for wet/dry drilling clean holes to tile/ceramic,granite,marble,masonry
【Diamond Chamfer Finger Bits】-After drilling holes,This can design to Wet or Dry Enlarge, Shape, Polish,Clean,Trim,Finish,Round or Bevel Existing Rough Holes of Marble Ceramic Porcelain Tiles Granite Stone
【Machine】They can be used with hand drills, bench drills and most other machines.Notice: If using Hammer Drill,please shut off Hammer Mode,Recommend 2000-5000 RPM,Max 5000 RPM,the faster the better