Teng TENM340086 Adaptor 3/4in Female > 1/2in Male 3/4in Drive Teng Socket Converters convert sockets of one size drive to another. They consist of a male drive fitting of one size attached to a female drive fitting of another size. Manufactured from chrome vanadium steel for strength and durability and has a satin finish. This Teng Tools adaptor has the following specifications: Female Drive: 3/4in. Male Drive: 1/2in.