1/8'' 3.5mm to 1/4“ 6.35mm TRS Stereo Adapter: This adapter is with TRS stereo 1/8" 3.5mm male plug and TRS stereo 1/4" 6.35mm female plug, which is allowed devices with 1/8" 3.5mm TRS stereo port to connect 1/4" 6.35mm TRS plug aux cable. Sold Copper with 24K Gold-plated Connector: Connector are made with sold copper and copper material wire connecting inside, plating with 24K gold. It can ensure reliability and eliminate signal loss and noise with more stable contact and connection. Step-down Design: 1/8" 3.5mm male connector is make with step down desigh for more secure and stable connection to the devices like smart phone, tablet and laptop, etc. Plug-in and Play: Physical point-to-point connection, no need to install software, drive, or complex connection mode. 360 degree grip treads makes plugging and unplugging easy. Wide Compatibility: Compatible with most audio and home audio equipment, such as headphone, smartphone tablet, laptop, karaoke system, speaker, recorder, home theater devices or AV receivers, etc. Warranty: 18 months warranty for quality problem, please let us know and we will immediately refund your purchase price or give you a replacement. 1/8'' 3.5mm to 1/4“ 6.35mm TRS Stereo Adapter: This adapter is with TRS stereo 1/8" 3.5mm male plug and TRS stereo 1/4" 6.35mm female plug, which is allowed devices with 1/8" 3.5mm TRS stereo port to connect 1/4" 6.35mm TRS plug aux cable.