Teng: Adapter 3/4in Female 1in Male 3/4in Drive This Teng Tools adaptor has the following specification: Female Drive: 3/4in.Male Drive: 1in. MPN: M340085-C EAN: 5020385138902 Adapter 3/4in Female 1in Male 3/4in Drive Attributes: MFR Part No.: M340085-C Size: 1M > 3/4F Type: Adaptor