Toroline O-Toro 17 (1.23mm) White Tennis String

Unlock next-level spin with the Toroline O-Toro, the brand’s best-selling co-poly string engineered for players who demand both performance and comfort. Co-developed with former Top 25 ATP pro Steve Johnson, O-Toro features a sharp hexagonal profile that grips the ball for explosive spin while maintaining a controlled, responsive feel. Independent lab testing has validated its elite performance, earning a perfect spin rating while delivering a noticeably softer response than many traditional co-polys.

Designed for aggressive baseliners and big hitters, O-Toro generates heavy rotation without the harsh stiffness typically associated with spin strings, giving you the confidence to swing faster and finish points decisively. Offered in a 1.23mm (17g) gauge, each package includes two half sets (6.7m each), providing enough string for one full racquet.