Wilson hyper hammer 145 squash racket the wilson hyper hammer 145 squash racket incorporates power holes technology for more power and an increased sweet spot the racket benefits from a 14 x 19 string patter and is head heavy balanced for more stability and spin the hyper hammer is suited for hard hitting players who want great control of the squash ball on the court head size 77in sq frame weight 120g material graphitehyper carbon beam width 23mm sledge taper balanc