Head graphene xt extreme mpa tennis racket this head graphene xt extreme mpa tennis racket has been crafted with graphene xt technology for a lighter stronger racket which offers great weight distribution for a faster swing and more power whilst the adaptive string pattern system allows you to adjust your racket to optimise the spin and control in your shots and the hydrosorb pro grip ensures you can play your game in comfort it also comes with additional grommet strips so string pattern ca