PowerNick strings feature a monofilament Zyex core. Encapsulated with a high tenacity nylon monofilament surface.
PN18 is the string of choice for many of the worlds top class players
For players who like to play the ball hard and fast!
Here's a tip!
"I recommend that if you choose this particular string, specify a tension approx 10% less than you normally would, due to its playing characteristics to optimize performance"
Craig
Master Racket Technician