This long-lasting, high-power polyester string retains performance with minimal drop even after the punishing impact from big swings. Yonex PolyTour Strike lets aggressive players attack with confidence knowing their strings won t lose tension when they need it most.Gauge: 16G (1.30 mm) | 16L (1.25 mm) | 17G (1.20 mm)Length: 660 ft (200 m)Composition: Co-polyester MonofilamentColor: Iron GrayFor more info on the Yonex String, click the links below:Yonex: Strings and ThingsA Meeting with Mark Gonzalez: Yonex Australian Open Stringer and Texas RepNeed help selceting the right string? Check out our Buyer's Guide for more assistance.