Features: Heavy duty chrome molybdenum steel construction, solid and durable. Surface blackening treatment, not easy to rust or corrode. Standard size, applicable to various scenarios. Can be used with power tools or pneumatic tools. Ideal for the disassembly of large screws in machinery, auto repair, industrial hardware and other fields. Specification: Material: 42 chrome molybdenum steel Color: Black Size: 1/2" Star Head Drive: T50, T60, T70, T80, T90 (Optional) Package list: 1 x Socket Adaptor 1Heavy duty chrome molybdenum steel construction, solid and durable. 2Surface blackening treatment, not easy to rust or corrode. 3Standard size, applicable to various scenarios. 4Can be used with power tools or pneumatic tools. 5Ideal for the disassembly of large screws in machinery, auto repair, industrial hardware and other fields.