Feature:1. Suitable for processing equipment such as electric drills and bench drills, drilling stainless steel, copper plates, iron plates, aluminum alloys and other steel materials.2. The drill is precisely made of titanium‑plated high‑speed steel, with high hardness and good heat resistance.3. The cutting edge has high strength and fast gouge speed, which effectively improves work efficiency.4. The S-shaped spiral groove of the drill bit is beneficial to out the shavings and save time and effort.5. Using a powerful grinding wheel makes the blade groove sharper and smoother, making the drill more robust and durable.Specification:Item Type: Parallel Shank Twist DrillMaterial: High speed steelApplication: Hand drill, bench drill processing equipment, etc.Uses: Drilling stainless steel, copper, iron, aluminum alloy and other steel materialsSize:(Approx.) Drill Size（mm/in）Full Length（mm/in） Working Length（mm） 4.0 / 0.16 74 / 2.91 43 / 1.69 4.2 / 0.17 74 / 2.91 44 / 1.73 4.5 / 0.18 80 / 3.15 47 / 1.85 Package List:10 x Parallel Shank Twist Drill