Gives consumers a durable walker glide tip that is long lasting, safe and easy to install, and provide a smooth glide experience. Consumers can install them in seconds on Invacare fixed wheeled walkers. The Court-Side Glides feature a specially designed housing that allow the ball to rotate so it lasts longer. Spring loaded brakes for additional security and lock-out clips for pure gliding. The tennis balls pop in and out for quick and effortless replacement. Built in leg extensions.