Court-Side Walker Glides give users a durable walker glide tip that is long-lasting, safe and easy to install, and provide a smooth glide experience. These mobility glides install in seconds on Invacare fixed wheeled walkers. These mobility aids feature a specially designed housing that allows a tennis ball (included) to be manually rotated to unworn areas so it lasts longer. The Court-Side Glides have spring-loaded brakes for additional security and lock-out clips for pure gliding. Tennis balls pop in and out for quick and effortless replacement. One pair per set.