1、Standard Aperture: The walker wheels are compatible with most walkers on the market, allowing you to transform your walker into smoothly rolling device, making walking easier for the elderly, reducing the strain on their bodies. 2、Plastic Wheels: The wheels are made of durable plastic, providing smoothly mobility on various surfaces such as tiles, cement, wood, and carpets. They leave no marks and won't scratch your floors. 3、Stainless Steel Leg Extensions: The walker wheels come with sturdy and durable stainless steel leg extensions that are resistant to deformation and can withstand heavy weight. 4、Easy Installation: No additional tools are required for installation. Simply remove the lower half of the front legs of your walker and attach the wheels. 5、Adjustable Height: The wheels feature 6 adjustable height settings with locking mechanisms, allowing you to customize the height according to your needs. The fixed aperture provides stability and security. Item Type: Walker Wheels Material: Stainless, Plastic Size: Inner Diameter of Leg: Approx. 2.2cm / 0.87in, suitable for rollator with outer diameter of chair leg less than 2.2cm / 0.87in Usage: Can be installed on the front legs of the walker to facilitate smoother movement and reduce effort for seniors Features: 6 levels height adjustment, stainless steel legs, plastic wheels 2 x Walker Wheels