This double pack of Black Knight Ion Quartz PSX squash rackets is full of technology such as Thin-K that makes the frame more dynamic & powerful & enhances performance. The rackets are great for attack-minded players as they are open-throated, head-light & very manoeuvrable, with a head size of 500cm 2 (77.5in 2) & therefore a larger sweet spot. Power & stability comes from the Nano-Crystalline Technology & the Power Nick 19 strings. The rackets are supplied with full length covers.