The Black Knight Ion Cannon PS squash pack comprises of two rackets that have an open throat design which, combined with the Ion frame geometry, delivers superior power & a larger sweet spot. The Power Surge technology helps cut vibration & drives the power of the swing towards the big 500cm 2 racket heads. The frames weigh 135g (4.7oz) each & guarantee lower vibration as well as enhanced durability, which is ensured by the Extreme Modulus graphite. The Nano-Crystalline technology in addition increases strength & density, whereas an even balance makes power generation easy.