RPM Blast Rough is the textured version of RPM Blast, one of the most popular co-polys ever made. Like the standard RPM Blast, this string is a co-polymer monofilament with an octagonal shape and a special cross-linked silicone coating. RPM Blast Rough is perfect for aggressive players who like to attack the ball with long, fast strokes. The durability is also quite high, making this a great option for string breakers. Available Gauge: 16/1.30mm , 17/1.25mm, 15L/1.35mm