1Impact 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. 2High Grade: The special filigree design, clear and high grade texture of this replacement tennis rackets string can add luster to the tennis racket. 312.2m Length: The tennis racket string is about 12.2 meters long, which is enough to use a regular tennis racket line, so you can use it with confidence. 41.3mm Diameter: The replacement nylon tennis rackets string is in a standard diameter of 1.3mm, which has higher elasticity and more durable. 5Replacement Parts: This tennis racket string can be used as a replacement repair part to replace the original damaged line of tennis racket.