
Babolat has modified their RPM Formula and created RPM Rough. The rough texture helps increase spin potential in addition to the octagonal shape. The co-polymer mono-filament construction uses a special cross-linked silicone coating ensuring the strings still glide across each other. RPM Rough plays softer than original RPM Rough, with a little bit more pop. This iteration is a wonderful choice for players who hit heavy topspin but want a little livelier feel than most co-poly strings. Construction: Extruded co-polyester monofilament Color: Dark Grey Gauge: 1.30mm (16g), 1.25mm (17g) Length: 200m (660')