Overview and Specifications:
1. Product material: high speed steel 4241.
2. Product specification range: 3mm-12mm.
3. The specifications have 10 steps: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm.
4. Drill shank interface: 6.35mm hex handle straight groove.
5. Product features: This step drill high speed steel material, good quality. A drill can be used to punch a variety of holes. Suitable for opening holes in thin iron sheets, aluminum sheets, insulating sheets, PVC sheets, wood, etc.