1. Specifications: 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 26, 28, 30, 40, 50mm 2. Weight: 325g 3. Packing size: 12X10X5 cm 4. The product is suitable for: drilling holes in glass, marble, ceramics, etc. 5. Features: Stable quality. No broken edges. Good concentricity will not produce tremors. Has a good opening speed. Good binding force of powder and nickel. High wear resistance 6. When using, please pay attention to constant temperature and uniform speed to maintain continuous water supply to prevent overheating and reduce service life
