The MEGAPRO 13-in-1 automotive ratcheting screwdriver shaft is made from Stainless Steel 303 and includes 6 sizes of star screwdriver bits. This magnetic screwdriver drive fasteners easier and faster with its precision 28-tooth ratchet design and rubberized cushion grip handle. Loaded with 12-one inch insert bits made from S2 industrial grade steel, this assortment of bit types and sizes provides the most suitable tips for driving automotive screws. The shaft opening serves as a 1/4? hex driver. This is simply the right tool for difficult spaces and angles.