The Wilson Force 155 BLX double pack features two of these very playable squash rackets. With a head heavy balance & a 77in 2 (496cm 2) head, the racquets will help you generate good levels of power. The Power Holes system in the head expands the size of the sweet spot for more forgiveness & power & better overall performance. The rackets are comfortable to use, with the frames each weighing a medium weight of 155g (5.5oz). The Triad & BLX technologies in the rackets improve playability by delivering great shock absorption & vibration dampening so that feel & feedback are enhanced. The rackets come with ¾ length protective covers & have been strung in a 12x 18 pattern with a Sensation Strike 17 string.