Ashaway UltraNick 18 Squash -
The Ashaway UltraNick 18 Squash String: This family of squash strings features a multifilament Zyex core encapsulated with a high tenacity monofilament nylon wear surface.
Multifilament Synthetics. UltraNick 18 maximizes softer feel. UltraNick strings provide minimal tension loss and consistent performance; recommended for professional and amateur players. Zyex Multifilament Fibers provide ultra performance.