, _8 C8 v/ e* Z$ @, i( l % \8 L7 n6 M3 N4 w! i8 k9 bdepends on the weight of the racquet, 2u or 3u. 1 n, x, y7 y, }3 A' U1 b4 v! jjust by browsing any online store, you can find that info. $ [9 v! J& T' t1 ^ h U9 Qie. xin lan tian(in chinese) or mybadmintonsotre.com