Features: 1Single Fiber Composition: The innovative synthetic polyester line, the use of ultra soft single fiber composition, can provide super explosive power but also protection of the arm. The surface has a groove, with excellent ball control and feel 2Double Ribbed Outer Layer: The outer layer has double ribbed, It is not easy to slip when using, the line diameter is small, and can perfectly block the tennis ball, can enhance the rotation, suitable for playing topspin 3Comfortable Hand Feeling: Tennis racket wire is comfortable and feel both comprehensive network cable, is an excellent tennis racket accessories 4Strong Tensile Resistance: Tennis racket line due to strong tensile resistance, the pound is very small, very suitable for usually like to play it 5Reduces Racquet Surface Vibration: The tennis racket string has ribbed design, which increases the contact time between the ball and the racket surface, so it reduces the vibration of the racket surface Item Type: Tennis Racket String Material: Polyester Weight: Approx. 442g / 15.6oz Model Number: PT 123 Wire Diameter: 1.25mm / 0.05in Line Length: 200m / 656.2ft Package Included: 1 Reel x Tennis Racket String