Treadmill Doctor Reebok Rbx475s Treadmill Running Belt Model RBTL10500 Review HelpfulOwl Treadmill Belts May 24, 2018September 2, 2018Exercise & Fitness, Exercise Machine Parts & Accessories, Sports & Fitness, Sports & Outdoors, Treadmill Doctor 0 Comment This is the replacement walking belt for the Reebok Rbx475s Model RBTL10500 Walking Belt Size 19×112