5 Pieces black headphone adapter: 6.35 mm (1/ 4 inch) audio stereo plug to 3.5 mm (1/ 8 inch) stereo headphone jack adapter, designed to adapt a mini stereo phone plug to a stereo phone jack. Stereo audio adapters convert a 3.5 mm (1/ 8 inch) female plug into a 6.35 mm (1/ 4 inch) male jack. Handy connection: Headphone jack enables you to connect your headphones or stereo other compatible devices with most pro audio and home audio equipment. 360 Degree grip tread of the stereo audio adapters allow you to plug and unplug easily and conveniently Durable connectors: Nickel plated connectors of the headphone jack plug resist corrosion and ensure minimal signal loss, for a long time use. Wide application: Headphone jack adapter can be applied to electric pianos, guitars and other instruments, mixers, specialist audios, speakers, microphones, phones, MP3 players, etc. Earphone adapter can be also applied to most pro audio and home audio equipment, such as amplifiers, mixing console, home theater devices, amplifiers or AV receivers. Specifications: Connector diameter: 6.35 mm male (plug) and 3.5 mm female (jack) Color: black Package includes: 6 x Headphone adapters Compatibility: Compatible with headphones that have a 3.5 mm (1/ 8 inch) male TRS plug and any audio device that uses a stereo 6.35 mm TRS jack connection.