0 z, ~6 B9 w2 Q% {7 @* k9 c i. Q$ D/ x
depends on the weight of the racquet, 2u or 3u. 4 y4 k _1 r# m1 f4 N% U% Zjust by browsing any online store, you can find that info. ( j: d) T2 ^0 i, F' J' v5 M+ ^/ uie. xin lan tian(in chinese) or mybadmintonsotre.com