, W' }* V# S( k" C+ W9 @ e X
; a% }( z! ]. b' B7 e8 L
depends on the weight of the racquet, 2u or 3u. ; D6 a$ W. a5 P: G7 F2 M3 _
just by browsing any online store, you can find that info. w: h. e( J* Z& T5 Z
ie. xin lan tian(in chinese) or mybadmintonsotre.com