Prince O3 Tour Prestrung Squash Racquet with Case Prestrung squash racquet with distinctive O-ports for greater power and stability O-ports help stabilize the racquet to give you more control on off-center shots Sweet spot is up to 54 percent larger than traditional racquets for improved power Triple Threat Tungsten design creates phenomenally stable frame Head size measures 73 square inches; weighs 145 grams unstrung