The mu1mmfs 35mm headphone extension cable 1m features a 35mm 18 trs male audio connector on one end and a 35mm 18 trs female audio connector on the other making it easy to extend the reach of your headphones between your iphone mp3 player or other mobile audio devices and your stereo system to ensure long lasting performance this high quality headphone extension cord features molded pvc strain relief at each of the 18 trs connectors which prevents the cable termination poin