4 sets of the top-of-the-line Tecnifibre NRG2 Tennis String. 

Made in France. 

The 16Ga. 1.32mm string gives you the power and feel you need to dominate on the court. 

Don't settle for anything less than the best. 

With Tecnifibre's reputation for quality and performance, you can trust that this string will enhance your game. 

This string is a must-have for any serious tennis player.