HOHXEN 3 Packs Spiral Step Drill Bit Set with 4-12mm/4-20mm/ 4-32mm, Total 32 Sizes, 1/4\ Hex Shank Cone Titanium Coated High Speed Steel, Multi-Functional Industrial DIY Metalworking tools
- 3 standard SAE Spiral step drill bits can drill 32 different size of holes on different thickness of materials.The 3 Cutters Come in the Following Sizes: 4-12mm: 4mm,6mm,8mm,10mm,12mm.
- 4-20mm: 4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm.
- 4-32mm: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm..
- Made with drop forged heat treated high speed steel (HSS) with titanium nitride coating for longer life time..
- 4241 high-speed steel, used in hardness under 25 ¡ã workpiece, the plate thickness under 5 mm..
- 1/4" round shank (6.35mm)can be easily fit into power driver, drill and press drill. Two-flute design provides faster, smoother cutting without walking and a tri-flat shank ensure a firm grip..
- Comes with 3Pcs 1/4 Inch round Shank HSS Titanium Coated Step Drill Bit Set - 4-12/4-20/4-32mm With Pouch.Suitable for punch holes through sheet metal, iron plate, aluminum plate, brass, wood, plastic, etc..