1、Hex Shape Rotating: Hex shape rotating string, high grade polyester tennis racket string, the surface is roughened to bring more rotation. 2、String Length: The length of the tennis racket string is about 12m / 39ft, which is enough to use the length of a regular tennis racket. 3、High Temperature Treatment: High temperature treatment to form a twisted polyester string that provides good rotation, strength and control. 4、Stable Tension: The tennis racket string method improves its tension stability, providing excellent comfort and good topspin. 5、Wide Use: The overall design is very good for players looking for topspin. It is suitable for tennis enthusiasts, training, competition, etc. 1 x Tennis Racket String Item Type: Tennis Racket StringMaterial: Polyester StringLength: Approx. 12m / 39ftString Gauge: 1.3mm / 16gauge ( 0.05in / 16gauge) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.