Solinco Mach-10 16L Tennis String Reel 656 ft Reel – Power, Spin and Controlled Comfort Solinco Mach-10 16L is a high-performance co-polyester string engineered for explosive power, exceptional spin and long-lasting playability. CloudFORM technology provides a softer, more responsive feel, while the five-sided profile and low-friction surface promote powerful snapback and ball bite. Length: 656 ft / 200 m Gauge: 16L / 1.25 mm Material: Co-polyester monofilament Shape: Five-sided Color: Light Blue Manufacturer Item #: 1920603 Ole Tennis Recommendation Recommended for intermediate and advanced players seeking a balanced combination of power, spin, control and durability. The 16L gauge is an excellent all-around choice, offering more feel than 16 gauge and greater durability than thinner 17-gauge strings. Explore more Solinco tennis strings.