【High quality】Made of high quality S2 steel material which is durable and tough, a commonly used material in hardware 【Titanium coating】 Surface is finished by titanium coating which gives bits a high hardness and beautiful color for anti-oxidation and makes these cutters more durable 【Non-slip】These screwdriver bits have skid resistant tips that can prevent them slipping from screws 【Hex shaft】 With 1/4 in hex shaft, they are widely used on electric screwdrivers, hand screwdrivers, electric drills, etc.Also 1/4 inch quick-change shank fits drill chucks, impact drivers, adapters,extensions and bit holders 【Utilities】 Comes total 5/10 pieces PH2 screwdriver bits that you can use for a long time. It is useful to operate electronic device, perfect for electrician, mechanic andrepair work, Manufacturer: SUPERTOOL