Dear Nita: I found the reference on the 'wheels', it is the Leber Rollators with a color brochure showing and describing about 8 different models. We got ours from: The Shirley Walker Co., Inc. P.O.Box 981 Brooklandville, MD. 21022 (410) 363-4519 Fax (410) 363-8696 1-800-848-WALK Good luck Michel