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