*14 Gauge Steel Tubular Frame Robotically Welded. *Equipped With A Patented Double Lock Ratchet. Features A High (40”) And Low (27”) Belt Position To Handle Various Appliance Heights. Furnished With A 14′ 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.