Hexagonal Shank Drill Bits Tap M6 HSS 1/4 Inch for Metric

【High Hardness & Rust Resistance】These hex head taps are made of high speed steel and feature nitriding surface finish for high hardness and rust resistance. 【Designed with Spiral Flutes】Taps with drilling function, used to drill a hole and cut new threads at the same time, will allow you to get a smooth tapping experience metal, aluminum plate, iron, etc. 【More accurate and efficient】Automatic centering point, does not require auxiliary center drilling and central perforation, more accurate, eliminates human errors, greatly reduces processing steps and time costs, improves work efficiency 【Anti-wear】 The back of the cone is covered by the tap to prevent excessive punctures caused by damaged threads. 【6 Different Sizes from M4 to M8】: Quick change of 1/4 inch hex shank with imperial sizes engraved on the taps to meet your various demands