The Pro Hurricane answers the specific needs of competition players. Exteme durability, power, comfort and control due to stable tension. A high-performance string with unparalleled flexibility and extreme resistance made for string breakers. Gauge: 16g or 17g Length: 40' Type: Polyester Tension: 16g maximum tension 74lbs., 17g maximum tension 70 lbs. Misc.: XFP Technology- Xtrem Futur Polymer