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. Our playtesters found it a tad softer and more powerful than the original RPM Blast, resulting in a slightly more penetrating shot. With its grippy surface, you'll find plenty of bite for bringing the ball down with spin. The durability is also quite high, making this a great option for string breakers. This 1.25mm version offers a tad more spin potential and feel but less durability than the 16 and 15L versions.