Tennis string for sale. Enough for one restring. * XR3 is a nylon string with strong repulsion, making it easy to hit with. * It's also gentle on the arm, so it's good for those who have been injured. * It helps with spin on serves, making them easier to land. * It's suitable for those who want to hit the ball a little further. * X-ONE Biphase is expensive, so purchasing XR3 is an option for cost reduction. * It flies well, so it's a good string to use in the cold winter. Reference: In the Tokyo metropolitan area, there are places that will restring your own string for 1000 yen. Type...Tennis string Use...Hard court