The double pack of Wilson's PY 145 BLX squash rackets delivers double the power & accuracy. The rackets use the unique BLX technology in the 145g (5.1oz) frames to improve vibration dampening & provide cleaner feel & feedback. The frames are made from lightweight graphite that makes them stronger & more durable. These head heavy racquets have generous 76.7in 2 (495cm 2) heads that make for more accurate hitting & add to the power potential. This is further enhanced by the Power Yoke system that produces a larger sweet spot. The racquets are supplied strung with a Sensation Strike 17 string in a 12x 18 pattern & they include protective 3/4 covers.