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depends on the weight of the racquet, 2u or 3u. r, t; G# N) Q% d& c. e, g$ Y- qjust by browsing any online store, you can find that info. 8 @, Z8 n# ]3 B8 H5 b, I% q/ g0 h
ie. xin lan tian(in chinese) or mybadmintonsotre.com