Durable USB cables with aluminum connectors and tinned-copper wires, also the wire yarni is added to let the USB cable be stronger, durable and flexible. Our FLEX USB cables are adopted to a national standard high quality pure 128 pieces of tinned-copper wires, which have low loss, 24K gold plated, that makes the cable well-connected that will not damage your mobile devices. Advance compatibility: quickly and easily connect your flex sync and charge cable to your electronic devices.