1. Specifications: 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 26, 28, 30, 40, 50mm2. Weight: 325g3. Packing size: 12X10X5 cm4. 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 resistance6. When using, please pay attention to constant temperature and uniform speed to maintain continuous water supply to prevent overheating and reduce service lifeSpecification: Package Weight One Package Weight 0.38kgs / 0.85lb One Package Size 18cm * 10cm * 6cm / 7.09inch * 3.94inch * 2.36inch Qty per Carton 78 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 78 pcs = 13806 pcs 40HQ: 412 cartons * 78 pcs = 32136 pcs