RPM rough features a dented texture surface to increase movement of the strings for an increased spin potential and grab the ball at impact. The Crosslinked Silicone coating offers better sliding between mains & crosses for fast string repositioning. 

Additional information:

These strings are particularly well suited for intermediate through advanced level club players. Try it...you'll quickly become addicted to the outstanding performance.

This string is softer than RPM Blast and RPM Team making it an ideal choice for junior players looking for a polyester string.

Specifications:

• Colors:  Black/Black
• Composition:  Co-Polyester Monofilament/Natural Gut
• Gauge:  RPM-17g(1.25mm)/VS-16g(1.30mm)
• Length:  20' x 20'
• Type:  Hybrid
• Mains:  RPM Blast 17g
• Crosses:  VS Natural Gut 16g
• Sport:  Tennis