Wholesale RS PRO 3.5 mm Stereo Jack Cable, Stereo Jack Plug Cable, 3 Pole 3 Pole Stereo Jack Cable, 3.5 mm Jack Cable for various audio applications. The black casing It has good electrical insulation, emphasis on safety, 3-pole jack plugs for stereo applications, cable grommets, gold-plated contact screws, perfect for hi-fi use, ensuring sound quality signals Used for mobile phones and tablet devices, MP3 players, digital video cameras