Great for players seeking more durability without hindering control & touch, the Ashaway Super Nick ZX Micro squash string set boasts a multifilament nylon core for enhanced precision & impeccable shot sensation whilst the ZX wear layer with Zyex® filaments ensures the robustness of the string. This 18-gauge (1.15mm) string maintains the tension for much longer, it’s truly made in the USA, & supplied in a 9m (30ft) set.