3PCS 3-12mm 4-12mm 4-20mm HSS Straight Groove Step Drill Bit Set Titanium Coated Wood Metal Hole Cutter Core Drill Bit Set

 

100% Brand New and High QualityMade from high quality HSS steelIdeal for using to cut holes in a variety of materials including steelbrass, wood, plastic, etc.(Thickness within 5mm)Titanium coated to reduce friction and heatHeat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc.3 sided shanks design in order to prevent slippage when in chuckTwo flute design provides faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps

 

Specification:Surface treatment: Titanium Plating