About this item 3 Pieces 6.35 mm mono female to 3.5 mm stereo male, 3 pieces 3.5 mm stereo female to 6.35 mm mono male, 1 piece 3.5 mm stereo female to 2.5 mm mono male Connect headphones to audio devices such as amplifiers or AV receivers with a 6.35 mm socket It's widely useful in daily life and 8 different adapters can fit your needs very well For microphone, headphone, guitar, or computer, etc. Suitable for a 6.35 mm stereo port to accept a standard stereo cable with a 3.5 mm plug Dimensions: 5.79 x 3.94 x 0.59 inches