" s4 [; B: n: I v8 v2 S6 T* O1 \' rdepends on the weight of the racquet, 2u or 3u. 1 z3 f0 [* @7 h* U, J2 K
just by browsing any online store, you can find that info. 0 c2 J7 y/ t5 N) [3 @: F/ g8 m
ie. xin lan tian(in chinese) or mybadmintonsotre.com