1.1 to 2 Adapter (3.5mm to 3.5mm) 2.Used for mp3, airline etc 3.Gold-plated adapter with good connection 4.Free samples Feature:1.3.5mm jack to 6.35mm jack adapter2. Gold or nickel plating jack with good connection3.CE&ROHS4.Easy to plug and use5.Used for mp3, airline ,speakers etc 3.5mm Stereo Plug to 6.35mm Mono Jack Adapter