Product_description: ["The Mabis 5' Telescoping Adjustable Wheelchair Ramps easily extend for use with steps, curbs or vehicles. Completely adjustable with push button lock mechanism features strong rust resistant aluminum construction with durable non-skid treads. U-shaped tracks provide added safety. The Ramps three section design contracts easily for storage in included carry bag which hangs over handles on wheelchair. Ramps are 7'' wide and adjust from to 3'-5' in length. Weight capacity is 330 lbs per ramp for total of 660 lbs."] (Page 1)