UNIVERSAL WALKER WHEELS: universal replacement wheels for walkers with Tube outer diameter is 28mm. Set includes 1 pair of wheels and 2 pairs of caster fittings. WHEELS: The wheels for walkers for seniors are made of premium rubber material and support a capacity of up to 300 lbs. The sturdy aluminium tubes long lasting durability, allowing you to use these wheels for many years to come. 8 HEIGHT ADJUSTMENTS: There are corresponding 8 holes on both sides of the walker wheels for folding walker, you can adjust the height by yourself and choose the most comfortable height. SMOOTH GRIDDING EXPERIENCE: The 5 inch walker wheels allow you to experience a smooth roll and enjoy effortless gliding. It is suitable for hardwood floors, tiles, and grass. EASY TO INSTALL: The installation process is very simple and requires no tools. Simply insert the wheels securely and make sure they are securely in place. Ready to switch on and use! Color: As Shown Material: Aluminum Alloy Package Contents: 2 x Walker Wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.