Item Type: Tennis Racket Wire Protection Tube Material: Nylon Color: Black Package List 15 x String Protection Tubes 1Manufacturing Material: Made of high quality nylon material, lightweight and durable, feel comfortable, and can be used for a long time. 2Replace Timely: Worn racquet rackets can seriously affect not only the service life of the racket, but also the quality and balance of the racket. 3Perfect Accessories: Use these tubes to perfect your racket. Small size and easy to store. Racquet gaskets replace the protection tube so that these tubes give your racquet better performance. 4Compact Size and Portable: Compact size, portable and easy to store, doesn't take up too much space. Simple operation, not too many tedious steps. 5Easy to Use: Easy to use and fine workmanship. Without any difficult requirements even though you use it for the first time.