The Gamma Live Wire XP 1.27mm tennis string set is 12.2m (40ft) long & ensures gut-like playability. It features Zyex monofilaments added to the outerwrap for enhanced durability & reduced tension loss. The string set has a gauge of 17 (1.27mm) & utilises Multiwrap Live Wire monofibres, as well as a Pearl Coating. The Live Wire XP incorporates the X-tra Performance technology & the Live Wire Technology delivering a great combination of power & control.