http://tinyurl.com/qa6jgx9
Invacare 5 in. Fixed Wheels with Rear Glide for Walkers
MORE CUSHIONING AND IMPROVED MANEUVERING OVER UNEVEN SURFACES.
BOTH WHEELS AND BEARINGS ARE CORROSION-PROTECTED. WHEEL RIMS MADE OF DURABLE EASY TO CLEAN POLYPROPYLENE , TIRES MADE OF THERMOPLASTIC RUBBER FOR INCREASED DURABILITY.