3Pcs 4-12mm/ 4-20mm/ 4-32mm HSS Steel Huge Action Cone Titanium Coated Steel Drill Little bit Cut Device Set Hole Cutter
Shank: 1/4" Quick Change Hex Shank
Material: HSS (Suitable for usage in the hardness below 25 levels workpiece, such as carbon steel, the thickness of the plate of step is 5mm).
4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30 mm,32 mm).
4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm).
4-12mm (4mm, 6mm, 8mm, 10mm, 12mm).
3pc Hss Step Cone Drill Bit Titanium Hole Cutter Set.