A new name for the muchloved Hurricane Pro, the Babolat RPM Hurricane 12m 13016 Yellow tennis racket string provides a combination of spin and control in a durable monofilament construction. The Babolat RPM Hurricane is the new name for the popular Hurrican Pro. Designed to combine control and spin, the Babolat RPM Hurricane features an octagonal structure to create action on the ball, while its copolyester monofilament construction ensures longlasting performance. Gauge 16 (1.30mm) Length 40ft (12m) Composition Copoly monofilament. Extremely durable, great combination between spin and control due to the co-polyester composition and the octagonal structure. Construction: CO-PET-O.