Babolat RPM Rough Tennis StringTECHNICAL CHARACTERISTICS String Type Polyester Mono Filament Sport Tennis Length 12 m 39 ft Made In France If you want to WIN, you need to use SPIN. The RPM Rough tennis string gives you great spin. You can actually feel the string texture. And the texture gives every stroke more bite. No wonder this string is used by the world's best players, including Flix Auger Aliassime. Made in France. Your racquet's strings are its driving force. In fact, they