When you string your racquet with Babolat(R) RPM Blast string, you choose the preferred string of Rafa, one of the most decorated tennis players. The RPM Blast is for players who desire control and durability and those who break strings often. Built with an octagonal cross-section and cross-linked silicone coating, this string quickly returns to its original position and "bites" the ball, letting you crush your opponent with maximum spin. ** Learn more about Racquet Stringing Services available at select DICK's Sporting Goods locations ** FEATURES: String of choice of Rafael Nadal, Jo-Wilfried Tsonga, and Samantha Stosur For players who desire durability and control and those who often break string High-density co-polyester monofilament Powerful, ultra-high-speed response with a unique feel Octagonal cross-section with cross-linked silicone coating for quick return and bite Gauge: 16 g / 130