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depends on the weight of the racquet, 2u or 3u. 5 @ p% t+ A5 P/ `: f. @1 ~2 Wjust by browsing any online store, you can find that info. ; x; L6 i! M6 v0 R; o8 h! L& a
ie. xin lan tian(in chinese) or mybadmintonsotre.com