3 Pcs HSS Step Drill Bit Set, 4mm-12/20/32mm High Speed Steel Step Drill Bits Set Titanium Coated, Cone Hole Cutter Drill Bits with Universal Hex Shank for Wood Metal Plastic PVC Board Sheet
This step drill sets are made of outstanding strong HSS steel material and coated with Titanium, which are wear-resistant, corrosion-resistant, rust-resistant, ...