Adult tennis racket head size midplus racket head size 645 cm head size inches 100 sq in stringing 16 x 19 level advanced type of racket all round racket balance 330 mm recommended height from 155 cm weight unstrung 303 g racket balance even grip size l1 l4 shape oval frame profile min 25 mm frame max 25 mm length 685 cm length inches 27 season 2015 player kei nishikori additional information the offers may vary in grip siz