The Ashaway Ultra Nick 17 squash string is used by the worlds top players, including Nick Matthew, David Palmer & Ong Beng Hee. The string features 1.25mm in diameter for increased durability, Zyex multifilament core for increased power & resilience, & textured surface for enhanced control & spin. It is recommended for players who seek powerful, lightweight & durable string with soft feel. It comes in a 9 metres set.