* These Screwdriver Bits are with magnetic design.* This useful hex screwdriver bit, exquisite workmanship, each edge can be accurately locked screws, no damage to the screw, and the screwdriver head.* Great replacement for missing, bent or broken hex head screwdriver bits.* Made of S2 alloy steel, which is a commonly used material in hardware with high hardness.* Those bits fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth
