S2 Steel With high strength and hardness for ultimate durability, suitable for industrial use. Magnetic Tip Holds screws securely before installing and after getting them out for higher efficiency.Easily pick up screws and small accessories Wide Application Electrician Mechanic Repair work * 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 square 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批头, * 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 square 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批头,