5PCS Dry Diamond Drill Bits Set for Granite Ceramic Marble Tile Stone Glass Hard Materials (not for Wood), Round Shank 1/4, 5/16, 3/8, 1/2 inch
- Specifications : drilling holes diameter of 2PCS 1/4 inch(6mm), 3/8inch (10mm), 5/16inch (8mm) and 1/2inch (12mm).
- Versatile: Great for drilling clean holes to hard materials especially tile, glass, slate, marble, granite and other stones (not for wood).
- Dry Drilling Design: Diamond Drill Bit integrated with cooling wax inside which melts while dry drilling and cools the cutting surface lubricating.
- No need to add water, direct dry drilling(When dry drilling, be careful not to drill continuously. After drilling a hole, wait for the hole opener to cool down before continuing to drill.
- when adding water, you can drill continuously to prolong the life of the bit).
- Compatibility: compatible with most machines such as Hand Drill, Angle Grinder, Bench Drill。(Hand Drill: need more than 48V power model.
- Angle Grinder: need to adapt to the adapter.
- Bench Drill: need more than 600W power model).
- Worry Free: If you encounter any problems in using the products, please feel free to contact us for satisfactory customer service.