Junior tennis racket head size oversize racket head size 658 cm head size inches 102 sq in stringing 16 x 19 balance 325 mm recommended height 140 155 cm weight unstrung 245 g racket balance head light shape oval frame profile min 24 mm frame max 24 mm length 66 cm length inches 26 season 2016 series head radical additional information the offers may vary in grip sizes