Dry Diamond Core Drill Bits 2pcs 20mm SANLEETEK Hole Saw with Triangle Shank for Ceramic Porcelain Tile Granite Marble Quartz Stoneware

【Specifications】2pcs: Diameter 20mm; Total length 65mm; Diamond height 10mm; Diamond Grit #40/45; Triangle Shank; Handle diameter 10mm 【Application】Dry or Wet drilling Ceramic Porcelain Tile Granite Marble Quartz Stoneware, etc 【High Performance】Advanced vacuum brazing technology and high-quality diamond provide High efficiency and long life 【Unique Detail】The design of 4 holes is conducive to improve the working efficiency of the hole drill 【Recommended Machine】Triangle Shank drill bits suitable for Hand Drill, Bench Drill. Minimum RPM: 2000; Faster the RPM, longer the working life.