Neiko 10084A 1/4" - 1/2" Drive Polydrive Ribe Bit Socket Set, 13 Piece | M4 - M16 | Cr-V Steel Works with fasteners on Italian cars (Fiat, Alfa Romero, Ferrari) and other European makes (VW, Audi, Mercedes, Porsche, Opel) High-strength chrome vanadium steel construction for enhanced durability and resistance against rust, corrosion 6-point lobe bit ends are sized for precise fittings to remove intractable screws and less likely to strip heads than torx bits Set includes a hard plastic blow-molded carrying case for organization and storage Sizes included: 1/4-inch drive: M4, M5, M6; 3/8-inch drive: M7, M8, M9, M10, M11, M12; 1/2-inch drive: M13, M14, M15, M16