Included in this double pack are two wilson whip 155 blx squash rackets with a 755in2 487cm2 head and an open 14x18 string pattern these racquets offer increased spin and power potential the rackets are fairly lightweight at 155g 55oz and have a head heavy balance for more stability power hinge technology optimises the string beds movement so that the sweet spot is bigger and hitting with more power is possible blx decreases vibrations for better feel and feedback and the sensation