Babolat RPM Power tennis string features a striking “electric brown” color and brings a completely different vibe to the popular RPM franchise. With their innovative CO PET-C extrusion technology, Babolat created a round-shaped string with increased feel while keeping it crisp and control-oriented. RPM Power slides easily against itself to help support ball. FEATURES: Used on tour by Dominic Thiem Smooth round surface for less friction Unique feel: both crisp and powerful Length: 40 Feet / 12.2 meters Guage: 17 / 1.25mm Babolat Tennis String 241139-336-17g