- 【Specification】Total 4pcs/set: 2pcs core drill bits 1/4”(6/6mm); 1pc 4/5”(20mm) beveling chamfer bit; 1pc hex shank adapter; 5/8”-11 thread
- 【Application】Suitable for drilling Porcelain Ceramic Tile Marble Granite, etc. Diamond core drill bits for drilling holes. Beveling chamfer bit for shape, enlarge and round bevel existing holes
- 【High-quality Diamond Grain】High quality diamond grains provides faster drilling speed. Dry or Wet use. Wet using will prolong the working life and get better drilling effect
- 【Vacuum Brazing Process】Vacuum brazed technology provides higher processing efficiency and longer working life, durable and sturdy
- 【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 Hex Adapter in the package. Use electric drill: Recommended speed 2000-5000RPM; Faster the RPM, longer the drill bit’s working life