Durable and powerful

The thicker gauge on this string compared to the R4X100 will help you last through more matches. The nylon multi-filament with patented quattro-fiber wraps provide solid control and durability. For players who want a harder feel.

durability: 90/100
power: 90/100
softness: 40/100
spin: 90/100

gauge: 0.68mm (21GA)
material: Nylon multi-filament with quattro-fiber wraps