Adult tennis racket head size midplus racket head size 645 cm head size inches 100 sq in stringing 16 x 20 level advanced type of racket all round racket balance 325 mm recommended height from 155 cm weight unstrung 280 g racket balance head light grip size l1 l3 shape oval frame profile min 23 mm frame max 23 mm length 685 cm length inches 27 technology tecnifibre synergylink series tecnifibre t fight colours blue red wh