29-piece core ratchet wrench set made from chrome-vanadium steel for durability and high torque, with a fully polished chrome finish that provides excellent corrosion resistance for long-lasting use. Wide application - Ideal for repairs, auto work, and various DIY projects. - Suitable for use with devices, computers, bicycles, cars, lawn equipment, machinery, and all types of mechanical maintenance. Sockets and bits - 11 sockets in sizes 5, 5.5, 6, 7, 8, 9, 10, 11, 12 and 13 mm. - Includes 10 bits for hex and other specialty screws such as FD 4-5-7, PH1-2, PZ1-2, T10-15-20. - This assortment covers a wide range of screw types and applications. Efficient and convenient - Bidirectional adjustable ratchet handle enables easy access to tight spaces. - Ergonomic design for comfort and efficiency; quick switching between sockets. Use scenarios - Automotive repairs and maintenance, engine bay work, and general vehicle maintenance. - Bicycle servicing and lawn equipment repair, including components that require varied socket sizes. - Computer, electronics, and home appliance assembly or repair where different fastener types are encountered.