RuiLing High Quality 3.5mm Male to 1/4 3.5mm to 6.35mm stereo adapters allow a standard 3.5mm (1/8 inch) stereo port to accept a stereo cable with a 6.35mm (1/4 inch) plug Connect audio devices such as amplifiers and AV receivers to MP3 Players or smartphones with 3.5mm socket Gold-plating resists corrosion and ensures minimal signal loss Allows you Connect headphones to audio devices such as amplifiers or AV receivers with 6.35mm socket. 360 degree grip treads help easy plugging and unplugging