* x1 L( s( ^- t# a+ a8 T* @
6 h* c3 O( F( Y2 | M: X
depends on the weight of the racquet, 2u or 3u. z3 q9 |+ l1 V2 `3 q/ G9 q) m6 d
just by browsing any online store, you can find that info. # X2 |, w1 ^& {6 E
ie. xin lan tian(in chinese) or mybadmintonsotre.com