Adult tennis racket head size oversize racket head size 677 cm head size inches 105 sq in stringing 16 x 19 level beginner type of racket comfort racket playing properties control power balance 325 mm weight unstrung 295 g racket balance head light grip size l1 l5 frame materials carbon glass fibre shape oval frame profile min 24 mm frame max 24 mm length 685 cm length inches 28 technology vlkl organix season 2014 seri