On this page you can purchase Synthetic Gut in reels (one reel is enough string for 18 racquets). Synthetic Gut is a premium quality synthetic gut (sometimes referred to as syn gut) tennis string. Despite its relatively low price, this string stacks up favorably to other industry leading synthetic guts. Golden Set Synthetic Gut performs nicely on its own or as a cross string in a hybrid setup (usually with a polyester string in the mains).