. ^$ m3 p2 y: J. h d2 ?4 k # I# [0 e( f. V: K9 edepends on the weight of the racquet, 2u or 3u. $ e* Z4 T9 d) J b0 D) u4 Y0 d
just by browsing any online store, you can find that info. * u' K' _: u7 c6 n
ie. xin lan tian(in chinese) or mybadmintonsotre.com