Ramp easily extends for use with steps, curbs or vehicles. Completely adjustable with push-button locking mechanism. Strong rust-resistant aluminum construction. Features durable, non-skid treads. U-shaped tracks for added safety. Three section design contracts easily for storage in a convenient carry bag, which hangs over wheelchair handles. Size: 7" wide, adjusts from 3' up to 5' long. Unit weighs 6 lbs. Weight capacity: 660 lbs.