2 ANTI-VIBE RACKET SPRING per card, and it is perfectly suitable for use in Badminton, squash and tennis. Give your racket a spring when hitting the ball
ANTI-VIBE RACKET SPRING is used by all racket type sports. The ANTI-VIBE RACKET SPRING will assist your racket to prevent the extra tension of the ball and will make the ball when it hits the racket take less shock and will better guide the ball to where you want it to go. Imagine these as shock absorbers on your racket.
2 RACKET SPRINGS supplied in this purchase.