[M3-M10 Drill Tap]---Drill tap suit M3x0.5 Tap, M4x0.7 Tap, M5x0.8 Tap, M6x1 Tap, M8x1.25 Tap, M10x1.5 Tap. Tap drill bit, 6 sizes set, which perfectly meet your different needs. A sharp, hardened drill bit induction, slightly induced wear-resistant, to ensure the puncture speed, improve work efficiency [HSS Material]--- tap drill bit for screwdriver HSS metal drill bits (titanium coated), tap drill bit Made of high speed steel (HSS), high hardness and rust resistance for a long service life. 6 PCS metal drill bit, suitable for drilling wood, plastic, thin copper, aluminum and other soft metals (5-6 mm), not for hard materials (e.g., steel sheet) [Improve work efficiency]--- Countersink Tap hammer drill bits, The complete drilling, tapping, deburring and milling in one operation save processing steps and time costs, improve working efficiency.These taps are used on a machine to perform tapping, usually more accurate as human error is eliminated [Smooth Edges and Precise Cutting]