Wilson force pro blx squash racket the wilson force pro blx squash racket is a great blend of power and control highly playable it boasts a 773in2 499cm2 head and a head heavy balance that are further boosted by the power holes technology to enhance the power potential the sweet spot has been increased making the racquet more forgiving on off centre shots moreover the blx system prevents vibrations and shocks to your arm the lightweight frame is pre strung with a sensation strike 17 st