The Luxilon 4G is a string of choice of Serena Williams, Paul-Henri Mathieu & other Pro Tour players. This gold tennis string has a gauge of 16L (1.25mm) & provides maximum tension maintenance for long lasting high level play. It also ensures more feel, enhanced comfort & longer playability without sacrificing excellent power & spin, which makes it a great choice for aggressive players who use rackets with an open string pattern. The string is made from co-polyester & incorporates a monofilament core. It is supplied as a 12.2m (40ft) set that enables you to string one racket with it.