The Dunlop X-life 1.22mm squash string set is 10m (33ft) long, which is enough to re-string one racket. The Dunlop X-life has a gauge of 17 (1.22mm) & features a compressed central core constructed from resilient multi-filaments that improve the string's playability. An outer wrap of this extremely durable squash string is made from twisting powerful mono-filaments, which helps maximise its reactive energy properties to ensure an excellent performance while playing.