Description: Terminal Binding Post Power Amplifier Dual Copper 2-way 4.0mm Banana Socket Plug,stable performance and easy to install Made by pure copper, which ensures a clean and high quality signal Connection: 4 mm banana plug or bare speaker wire connection Length: 42mm; Screw shaft diameter: 5 mm; Pitch: 19mm Varied applications including professional and consumer audio, test and measurement, power supplies and industrial uses Specification: Size: 40x32x12mm Package Includes: 1 piece Terminal Binding Post Power Amplifier with Dual Copper 2-way 4.0mm Banana Socket