? Can be use with microphones, electric guitars, headphones, loudspeakers, and many other items of audio equipment- ? The stereo jack adapter dopting gear grinding technique, 360 degree grip treads which help you plug and unplug easily . Mini size and portable.- ? Excellent QualityThese audio stereo plugs are made of metal, durable and anti-rust, resists corrosion, ensures 0% signal loss.- ?Powerful ConnectionsPerfect for a 6.35 stereo port to accept a standard stereo cable with 3.5mm plug (This adapter does not support 4-Pole TRRS Connectors).- ? Connect to 3.5mm earphones and headphones, and play the music in your MP3 Phones through amplifiers And many 6.3mm items of audio equipment, Piano, Electric guitar, Amplifier