Adult tennis racket head size midplus racket head size 645 cm head size inches 100 sq in stringing 16 x 19 levels professional advanced type of racket all round racket weight unstrung 300 g racket balance even stiffness 72 ra frame material graphite shape oval length 645 cm technologies babolat gt babolat aero modular babolat fis season 2016 additional information the offers may vary in grip sizes