, {$ \# k4 Q u9 G. U , I5 W5 {+ @2 d* y9 y- A, Qdepends on the weight of the racquet, 2u or 3u. / X3 l3 x: a9 v/ N8 S L
just by browsing any online store, you can find that info. : k( C9 r. g( n0 }6 d5 tie. xin lan tian(in chinese) or mybadmintonsotre.com