Superior Quality - Those Screwdriver Bits are made of S2 alloy steel, which is a commonly used material in hardware with high hardness
Convenient - Easy to install on the screwdriver handle with double ear on the sides of the bit shank. Great replacement for missing, bent or broken hex screwdriver bits
Ideal Magnetic Screwdriver - Those bits fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth