KIZUNA Z58 RACKET RESTRING | KIZUNA JAPAN BADMINTON STRING | JPKizuna Z58 racket restring is one of the Kizuna is one of the thinnest string in the world. The string have attracted a lot of the player who love high repulsion particularly in Singapore. In addition the string diameter gauge is 0.58mm that's the thinnest badminton in the world. Even