Description The Solinco Outlast 17g Tennis String (Reel) is a newly developed, high-performance and responsive polyester string designed to generate maximum power and unbeatable control. Revolution utilizes an innovative, high-powered polyester monofilament fiber designed and shaped to maximize the ability to control and manipulate ball flight and generate exceptional power. Specifications: Composition – Polyester Gauge – 17g/(1.20mm) Length – 656′ Type – MonofilamentThe Solinco Outlast 17g Tennis String (Reel) is designed to generate maximum power and unbeatable control.