Signum Pro Tornado Set Tennis this string offers a unique

this string offers a unique hexagonal shape that enhances ball bite and control

It is an excellent ball which is fast

The DirectConnect carbon fiber handle runs seamlessly into the end cap for enhanced feel and torsional feedback

the Ultra Pro 99 brings some added control and spin to the court

Signum Pro Tornado Set Tennis this string offers a uniqueTornado is a heptagonal shaped co polyester string offering a high level of dynamic power while providing exceptional access to spin. This string is axially twisted and dramatically increases the spin potential compared to traditional round strings. Signum Pro Tornado also offers excellent playability and comfort for a co polyester string.