6.35mm Stereo Plug to 3.5mm Stereo Jack (All Metal). 6.35mm Stereo Plug to 3.5mm Stereo Jack converts 6.35mm Stereo Jack to a 3.5mm Stereo Plug. Heavy duty, all metal, made with nickel-plated contacts. Heavy duty, all metal. Nickel-plated contacts. Connector 1: 6.35mm Stereo Plug. Connector 2: 3.5mm Mono Jack. External Length / Height: 53.9mm. Body Diameter: 11mm.