The Synthetic Gut Extreme is a state of the art tournament player"s synthetic gut.This string offers the popular medium between playability and durability so there"s no compromise for your performance.Co-polymer composite with unique elongation setting process for added durability and longer lasting performance, game after game.The Synthetic Gut Extreme is a traditional classic string with extreme feel.* Guage: 1.30mm* Colour: Natural* Power: 5* Control: 6* Comfort: 6* Durability: 7