2 S# H0 v" W D' w0 \/ \6 M2 _9 t" H( u( \' ]; G% W j% c
depends on the weight of the racquet, 2u or 3u. o- u+ o/ {. pjust by browsing any online store, you can find that info. * u5 X% v6 S, Z# U! U6 _6 E
ie. xin lan tian(in chinese) or mybadmintonsotre.com