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 new 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.