5 k# [$ w" j( p/ Q( i1 K+ |; `" E0 \. w$ P$ z Q. y4 N
depends on the weight of the racquet, 2u or 3u. * C# `5 B: Z. q9 n w, ~2 w
just by browsing any online store, you can find that info. 9 W. Q1 { y$ f) _* }0 uie. xin lan tian(in chinese) or mybadmintonsotre.com