*14 Gauge Steel Tubular Frame Robotically Welded. *High Load Capacity, Yet Economically Priced. *Equipped With A Plated Offset Belt Tightener With A 2-Piece Poly Belt. *High Quality Glass Filled Nylon Continuous Belt Stair Crawlers. *Industries’ Finest Non-Marking Vinyl Facing To Protect Appliances. *3/4′ Axle For Additional Strength.