Adult tennis racket head size midplus racket head size 645 cm head size inches 100 sq in stringing 14 x 18 level advanced type of racket all round racket balance 325 mm recommended height from 155 cm weight unstrung 295 g racket balance head light stiffness 70 ra grip size l1 l4 shape oval frame profile min 23 mm frame max 26 mm length 685 cm length inches 27 season 2015 series dunlop force additional information the off