Specification Brand : ANKROYU BulletPoint1 : 【Material】Our drill bits are constructed with rugged M2 high-speed steel, ensuring greatly reducing the of snapping compared to traditional drills. The unique 3-sided shank design not only prevents the insertion of drill chucks but also shock during drilling BulletPoint2 : 【Design】Enhanced speed and control with our dual groove design. Specifically optimized for high-speed operating cordless drills, these drill bits provide the balance of speed and accurate for your drilling needs BulletPoint3 : 【Reliability】Featuring a dual flute design, our drill bits offer smoother cuts and efficient chip evacuation for drilling operations. Whether you're using power drills, cordless drills, or high-impact drill presses, our drill bits deliver smoothness BulletPoint4 : 【Secure Reliable】With a 118-degree point nib, our drill bits increase wear resistance and make it easy to locate the drilling point. They effectively reduce bit slippage, ensuring a secure and reliable drilling experience BulletPoint5 : 【Convenient Identification】To make identification easier, the drill diameter is into the groove of our drill bits. Our non-slip tip the need for center punching and prevents the drill chuck from slipping, allowing for accurate and drilling ExternallyAssignedProductIdentifier1 : 0695256658503 ExternallyAssignedProductIdentifier2 : 695256658503 ItemName : ANKROYU Step Drill Bit, High Speed Steel Spiral Groove Step Drill, HSS Spiral Groove Pagoda Hole Hex Shank Tool, Cone Step Drill Bit for Metal (9 Steps(4‑20mm)) ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 3 centimeters ItemTypeKeyword : spot-welding-equipment Manufacturer : ANKROYU Material : Copper ModelNumber : ANKROYUywigmzb57d-12 NumberOfItems : 1 PartNumber : ANKROYUywigmzb57d-12 ProductDescription : Item Type: Step Drill Bit Product Material: High speed steel