3pcs Titanium HSS Spiral Step Drill Bit Set With 6.35mm Hex Shank For Metalworking Cutting Dia. 4-32mm 4-20mm 4-12mm

3pcs Titanium HSS Spiral Step Drill Bit Set With 6.35mm Hex Shank For Metalworking Cutting Dia. 4-32mm 4-20mm 4-12mm