●High-quality high-speed steel M2
●135°double relief angle, strong self-centering ability
●Grooves and surface are all-ground manufacturing, high precision, good consistency
●6mm (inclusive) three-plane shank, firm clamping, Prevent slippage
●Used to be clamped in a drill press or electric drill, suitable for gray cast iron, malleable cast iron, carbon steel, die-cast steel, nickel silver, graphite, etc.
●Special black gold treatment can enhance surface hardness, corrosion resistance, and light chip removal
● Meet the German standard DIN338
