6 o% A2 u( O$ O$ i3 U& P
* U' D7 o% q, Y, U$ e% e1 e
depends on the weight of the racquet, 2u or 3u. : x; H1 j6 P" B9 k! L. n
just by browsing any online store, you can find that info. : F! k$ h& ~2 N3 L) H
ie. xin lan tian(in chinese) or mybadmintonsotre.com