Press the trigger and boom; the ball blasts into the air! You and your dog are bound to have hours of fun together with the Nerf Tennis Ball Blaster. High-powered blasting action launches the tennis ball up to 50ft in the air. When your dog retrieves the ball, stay in the game by placing the barrel on the tennis ball creating a hands free action. A great item to take to the park, which creates energy and excitement!Sizes:All balls are standard tennis ball size (6.35cm diameter).Nerf blaster: H43, W23, D10cm. Weight 0.89kg