The head graphene extreme mp a tennis racket has a slightly rounder head shape that boasts an attacking 16x19 string pattern that can be changed to a 16x16 pattern thanks to the adaptive string pattern asp technology as part of the extreme range this racquet delivers exceptional power and spin and its use of graphenext technology means the weight distribution has been optimised to ensure fast manoeuvrability and excellent feel enhanced by the head light balance the head size is 100in2 645c