The head graphene extreme rev pro tennis racket is a lighter option but still packs a solid punch offering good power and spin like the rest of the extreme series its adaptive string pattern asp technology allows users to alter between a 16x19 and 16x16 string pattern to increase power or spin further made from graphite and using graphenext technology the distribution of weight in the 270g 95oz frame has been optimised so you can swing the racket quicker and get excellent feel for every