3 Pcs Cobalt Step Drill Bit Set titanium alloy and even hard

titanium alloy and even hard plastics and wood

5/16-24 NF

Designed for very high drilling temperatures and superior performance in stainless steel

This set is suitable for electricians

3 Pcs Cobalt Step Drill Bit Set titanium alloy and even hard3PCS Cobalt Step Drill Bit Set, Three Spiral Flutes Hex Shank Unibit Drill Bits for Metal, Stainless Steel, Aluminum, Wood, Plastic. TiAlN COATING: TiAlN coating has excellent characteristics such as high hardness, high oxidation temperature, strong adhesion, small friction coefficient and low thermal conductivity. TiAlN coated cutting tools can be used for hard materials and high speed cutting. THREE FLUTES STEP DRILL BIT: Ordinary step drill bits