1. Widely used in drilling holes in stainless steel, mold steel, aluminum alloy, cast iron, copper, galvanized pipes and other metal materials2. High hardness, wear resistance, accurate positioning and high efficiency3. Material: M35 cobalt-containing high-speed steel4. Suitable for hand electric drills, lithium electric drills, bench drills and other equipment5. Multiple sizes availableSpecification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 10cm * 2cm * 2cm / 3.94inch * 0.79inch * 0.79inch Qty per Carton 500 Carton Weight 26.00kgs / 57.32lb Carton Size 42cm * 32cm * 26cm / 16.54inch * 12.6inch * 10.24inch Loading Container 20GP: 763 cartons * 500 pcs = 381500 pcs 40HQ: 1771 cartons * 500 pcs = 885500 pcs