The luxilon 4g is a string of choice of serena williams paul henri mathieu and other pro tour players this gold tennis string has a gauge of 16l 125mm and provides maximum tension maintenance for long lasting high level play it also ensures more feel improved comfort and longer playability without sacrificing excellent power and 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 and incorporates a mo