About this item This 3.5mm female to 6.3mm male audio adapter allows you to connect your headphones or microphones with 1/8 inch plugs to audio devices such as home audio, amplifiers, guitars, and pianos with 1/4 inch stereo jacks. All Pure Copper: Made of pure copper, ensuring a much longer service life compared to plastic and gold plating. Quick and Simple: Fool-proof 360 grip design with no installation requiredsimply plug and play. Excellent Sound and High Quality: Constructed from pure copper to minimize signal loss and preserve sound quality. Dimensions: 3.74 x 2.24 x 0.51 inches.