Item Type: Tennis Rackets String Material: Nylon Gross Weight: 22g / 0.8oz Wire Length: 12.2m / 40.0ft Wire Diameter:1.3mm / 0.1in 1、Impact and Wear Resistan: Nylon tennis rackets string with a rotating titanium filament in the middle, has both elasticity and impact resistance, and strong wear resistance.  2、High Grade: The special filigree design, clear and high grade texture of this replacement tennis rackets string can add luster to the tennis racket.  3、12m Length: The tennis racket string is about 12 meters long, which is enough to use a regular tennis racket line, so you can use it with confidence.  4、3mm Diameter: The replacement nylon tennis rackets string is in a standard diameter of 3mm, which has higher elasticity and more durable.  5、Replacement Parts: This tennis racket string can be used as a replacement repair part to replace the original damaged line of tennis racket.