3 Pcs Large HSS Steel Step Cone Drill Titanium Bit Set Hole Cutter 4-12/20 /32mm
3Pcs HSS Steel Step Drill Bit Set Titanium Cone Hole Cutter 4-32mm. Upgrade your drilling performance with this 3-piece Step Cone Drill Bit Set made from high-speed steel (HSS) with titanium coating.