These Lumex 5-inch wheels are designed to enhance the safety and functionality of standard folding walkers. They feature an auto-stop, pressure-activated braking mechanism that engages when the user applies downward weight to the walker handles. This design provides additional security by preventing the walker from rolling forward during weight-bearing. The wheels are made of high-quality materials for smooth mobility and are engineered to fit most walkers with 1-inch diameter tubing.