General description Made from chrome-vanadium steel, this set of 9 imperial socket bits ranging from 5 to 13 mm is designed for durability and long-lasting use. The solid inner hexagonal socket is non-magnetic, making it suitable for most corded and cordless drills for hex head screws. This versatile set is ideal for home DIY projects, woodworking, automotive parts, and professional machine repairs. Technical specifications Material: Chrome-vanadium steel Surface finish: Galvanization, blackening Hardness: 45 ± 2 (HRC) Color: Black Sizes: 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm Adapter sizes: 1/2"(M) - 3/8"(F), 3/8"(M) - 1/4"(F), 3/8"(M) - 1/2"(F), 1/4"(M) - 3/8"(F) Other information Includes 1 x set of 4 durable reduction and augmentation adapters The spring ball stop keeps your sockets fixed and secure Black oxide finish enhances corrosion resistance