Co-developed with former Top 25 ATP Pro Steve Johnson. the Toroline O-Toro Tour 17 1.23 is a best-selling. spin-friendly option. This hexagonal-shaped co-polyester string provides impressive spin without sacrificing comfort. Its increased stiffness improves stability and responsiveness at higher swing speeds. Unleash power like never before with the Toroline O-Toro Tour 17 1.23!

• Offers 15% more stiffness than the original O-Toro. delivering a crisp and stable response at high swing speeds.
• Includes two half sets (6.7m length) for one racquet