The VCE 6.35mm 1/4" Male to 3.5mm 1/8" Female Stereo Jack Headphone Audio Adapter is a set of two audio adapters designed to convert a 6.35mm male jack to a 3.5mm female jack. This allows users to connect headphones or other audio devices with a 3.5mm jack to devices with a 6.35mm jack, such as amplifiers or musical instruments. Please see photos.