Volkl Classic Synthetic Gut 17G Tennis String The Volkl Classic Synthetic Gut 17G String features a monofilament core construction offering a longer tension hold and great control. This 17G string will sacrifice some of its durability, but will gain an increase in comfort and feel... Budget Friendly | Increased Feel And Tension Hold | 17 Gauge Size - (See Description) | Color - (See Description) Authorized Volkl Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.