WALKER WHEELS: Zantle replacement wheels for walkers with a 1" diameter tube and 0.31" (0.8cm) adjustment valve hole. Set includes 1 pair of wheels and 2 pairs of caster fittings IMPORTANT: Please measure your walker’s leg tube diameter before purchasing. This product is only compatible with walkers that have a 1-inch leg tube diameter. Please confirm compatibility before purchase to avoid fitting issues DURABLE WHEELS: The wheels for walkers for seniors are built for everyday use and can support up to 300 lbs. The sturdy aluminum tubes provide reliable strength and long-lasting durability, ensuring dependable performance for years to come 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, slate 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! 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