Brand New Drilling Bit Hexagonal Shank 4341 6.35mm 60-120mm 8pcs 1/4 \"
Material:Hss 4341 Coated. 8pcs HSS Drilling Bit. nitride coating facilitates faster penetration with less effort. The 1/4 "hex shank is specially designed for cordless screwdrivers, enabling you to quickly change drill bits.