Solinco Heaven Strings Hyper-G Tennis String Set-16g/1.30mm Gauge: 16 Diameter: 1.30 mm Composition: Co-Polyester / Square Shaped Length: 40 ft. / 12.2 m Colour: Green You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!