Solinco Hyper G is the string you should be looking for in you`re in need of huge amounts of spin thanks to its square profile. Huge amounts of spin; Square shape Top 50 ATP player string choice Swing without overhitting Size - (1.30Mm) | Color - (See Description) Solinco Hyper G is the string you should be looking for in you`re in need of huge amounts of spin thanks to its square profile. This dynamic co-polyester string uses the latest in materials and design to give players the winning edge. The string has a unique square shaped profile. This results in exceptional bite on the ball for off the charts spin generation. Solinco made this string for a Top 50 ATP player looking for a string that wasn`t too firm and wasn`t too soft, yet was still able to take massive swings at the ball without overhitting.