Adult tennis racket head size midplus racket head size 645 cm head size inches 100 sq in stringing 16 x 19 playing properties power spin balance 355 mm recommended height from 155 cm weight unstrung 265 g racket balance head heavy stiffness 67 ra grip size l0 l3 shape oval frame profile min 23 mm frame max 26 mm length 685 cm length inches 27 season 2016 series dunlop nt colours orange black additional information the