Feature: 1. Wide Application: Suitable for drilling various materials such as die steel, I‑beam, channel steel, ordinary steel, angle iron, aluminum, copper, wood and stainless steel within 1‑3mm. 2. 3 Section Design: 3‑section stepped design, the shank diameter is controlled within 12.7mm/0.5in, suitable for drill chuck within 13mm/0.51in. 3. Durable Construction: High speed steel material, high strength, not easy to rust, safe and durable to use, ensure fast execution in any material for clean results. 4. High Accuracy: Precision ground with geometry of 135 degree split point for quick penetration and accurate start‑up. Improve work efficiency. 5. Long Service Life: Surface black layer, anti‑oxidation treatment, holds up better lubrication for smoother drilling. Withstand heavy duty operation for a long tool life. Specification: Item Type: Drill Bit Material: High speed steelChip Flute Length: Approx. 5mm/0.2inBlade Length: Approx. 15mm/0.59in Outer Edge Angle: 135° Series: 1/2 handle twist drill Application: Suitable for drilling various materials such as die steel, I-beam, channel steel, ordinary steel, angle iron, aluminum, copper, wood and stainless steel within 1-3mm. Package List: 1 x Drill Bit