8 V/ y' N! A% M* |( w' } # R# M( ~" H. h8 B, qdepends on the weight of the racquet, 2u or 3u. ( o. w" ^8 [0 }$ t6 x+ i, X) W- fjust by browsing any online store, you can find that info. * ^; a' b/ w& P+ v6 ^ie. xin lan tian(in chinese) or mybadmintonsotre.com