Solinco Hyper G 17 Tennis String ReelSolinco Hyper G 17 Tennis String 1 Reel Power and Spin Feel the difference of the green string with the squared structure and even more top spin. This monofilament in co polyester was elaborated by Solinco to gain even more control. This string will be perfect to deliver powerful shots while keeping the ball in the court. This string will allow you to acquire fast racquet head speed, especially if you opt for a thin gauge. If you are looking to hit