Description Model: WRZ949130 Luxilon Natural Gut tennis string is made with organic raw material with a unique coating that will provide ultimate touch, to elevate your game to the highest level. This tennis string is made to work in combination with Luxilon monofilament strings. Luxilon recommends hybrid stringing with Luxilon Natural Gut and Luxilon Monofilament strings such as ALU Power and 4G. Each set is marked at the midpoint for easy half-set measurement. Gauge: 16G (1.30mm) Length: 40ft. (12.2m) Color: Natural