Item Type: Tennis Cross String Saver_x000D_ Material: Plastic_x000D_ Weight: Approx. 19g / 0.7oz_x000D_ Applicable: Badminton Racket, Tennis Racket, Squash Racket, Etc 1Plastic Material: Tennis cross string saver is made of durable plastic, which is light and durable. Strings will not be rub against with each other. 2Easy To Use: Reduces string movement by locking strings in place. Applicator tool makes it easy so that you can insert the cross piece with one hand. 3Function: Tennis cross string saver can extend the life of your strings. Tennis cross imparts more spin when ball is struck. 4Portable: Convenient to take it with you. Increased sweet pot and roughness for better control and ball spin. Prevent rubbing and lock them in place. 5Widely Used: Cross replacement string saver is applicable for badminton racket, tennis racket, squash racket, etc.1 Box x Tennis Cross String Saver