Dry Diamond Drill Bits Set 5pcs 8mm Hole Saw Kit with Hexagonal Shank for Ceramic Porcelain Tile Granite Marble Quartz Artificial Stone SANLEETEK

【Specifications】Totally 5pcs/set: Diameter 8mm; Total length 65mm; Diamond height 8mm; Diamond Grit #50/60; Hexagonal Shank; Handle diameter 8.3mm 【Application】Dry or Wet drilling Ceramic Porcelain Tile Granite Marble Quartz Artificial Stone, etc 【High Performance】Advanced vacuum brazed technology and high-quality diamond provide high efficiency and long life 【Unique Detail】Special design of top spiral groove helps chips removal and improves efficiency. Cooling wax inside improves the service life and reduces pollution 【Recommended Machine】Hand Drill, Bench Drill. Minimum RPM: 2000; Faster the RPM, longer the working life