Non-Corrosive, smooth, & responsive fingertip control means Power Cordz™ outperform steel cables in accuracy and durability for a superior shifting and braking experience. Our synthetic fiber control cords are designed to outperform steel cables in weight, accuracy and durability. In racing, efficiency is essential and each extra gram weighs against you. Power Cordz™ reduce cable weight by over 75% cutting approx 45-60g from your machine. Not bad considering they're bicycle cables!