Hex screwdriver bits are very popular in machine tools and driving deck screws.The vertically sloping side walls of a HEX recess screw head prevent the cam-out recess effect.Great for locations where surround obstacles limit Allen key access.Sutton Tools Supabit Extreme Impact Bits – Certified ‘heavy hitters’ specifically developed for use with the high-torque output of an impact driver.Hex tip: Great for locations where surround obstacles limit Allen key access|Magnetic tip increases productivity and eliminates frustration when working at awkward angles or in tight spaces|3X torque: Torque tested to exceed DIN standards by up to 330%|1/4" hex shank with power groove for use in impact drivers and quick change adapters. 1/4" hex insert with retaining notch for use in bit holders and hand drivers|Cold forged from premium shock-resisting S2 tool steel with a hardness of 58-62HRC for superior strength|Manganese Phosphate coating for highest hardness and superior corrosion and wear resistance