Adult tennis racket head size midplus racket head size 645 cm head size inches 100 sq in stringing 16 x 19 playing properties comfort control power spin balance 330 mm recommended height from 155 cm weight unstrung 260 g racket balance even stiffness 72 ra grip size l0 l4 frame material graphite shape oval length 685 cm length inches 27 season 2017 series babolat pure drive colours blue black white additional information t