1. It is convenient to use ordinary 3.5 earphones on the 6.5 jacks such as power amplifiers. It can convert the 6.5mm socket of the power amplifier and audio amplifier into a 3.5mm socket for ordinary 3.5mm. 2. The 360-degree grip pedal can be easily inserted and removed. 3. Interface diameter: 6.35 mm (1/4 inch) male jack and 3.5 mm (1/8 inch) female jack. 4. [Scope of use] guitar, speaker, mobile phone, power amplifier, microphone MIC audio transfer and other equipment 5. Plastic + nickel-plated plug, high-fidelity design, transmission of lossless signals, plug and play, Strong anti-interference ability, reduced transmission signal attenuation 6, color: black Packing: 15 pieces.