Junior tennis racket head size oversize racket head size 677 cm head size inches 105 sq in stringing 16 x 19 balance 300 mm recommended height 128 140 cm weight unstrung 205 g racket balance head light shape oval frame profile min 21 mm frame max 21 mm length 635 cm length inches 25 player roger federer string pattern 16 x 19 consisting of 1 racket 2 balls and 1 water bottle