FOCSTOL Diamond Core Drill Bit - 4/5''(20mm) Diamond Finger Milling Bit for Porcelain Ceramic Tile Marble Granite Stone Quartz 5/8''-11 Thread

FOCSTOL Diamond Core Drill Bit - 4/5''(20mm) Diamond Finger Milling Bit for Porcelain Ceramic Tile Marble Granite Stone Quartz 5/8''-11 Thread

【Size】Diameter 4/5''(20mm), total length 60mm, working length 35mm, 5/8''-11 Thread 【Application】Suitable for dry or wet drilling and grinding holes in Porcelain Ceramic Tile Marble Granite Stone Quartz, etc 【2 in 1 Design】According to the different needs, use different diamond grit, 5mm drilling length: diamond grit #35/40, 30mm grinding length: diamond grit #70/80, don't need to buy several different core bits, cost-effective 【High Performance】Vacuum Brazed technology and high-quality diamond grains provides faster drilling and grinding speed, longer service life, high efficiency 【Recommended Machine】5/8''-11 Thread Angle Grinder. Recommended speed 6000RPM, maximum speed 11000RPM. If you want to use electric drill or other machine, you can use SDS or Hex Shank Adapter