Wilson’s premiere multifilament synthetic gut NXT Tour features gut-like playability with a softer feel. NXT Tour also provides excellent comfort vibration dampening and resiliency. Composition: 1120 High Crystalinity Xycro Microfibers Polyurethane. Gauge: 16g 17g 18g. Length: 40′. Durability: 16g- 6.58 17g- 5.97 18g- 4.94. Playability: 16g- 8.43 17g- 8.75 18g- 8.56. Type: Synthetic.