Experience the next generation of cycling cable control systems! IoDupont's Power Cordz cable systems introduce several new innovations over the traditional steel cable. Power Cordz are more lightweight, more durable, and perform better than steel cables over a longer period. Each of these next generation cables contain thousands of Zylon fiber strands, one of the strongest superfibers known to man. These fibers are coated with a nylon sleeve for protection, optimum performance, and long life. These combined characteristics make Power Cordz the best performing, most durable, and lightest weight cable on the market.