"Manufactured from durable aluminum, this 30"" ramp won't rust, even with daily exposure to the elements! Able to accommodate up to 600-lbs, this mobility ramp is perfect for residential applications. The adjustable legs are easy to operate twist and lock legs into place and continue on your way. The legs are independently adjustable on uneven surfaces and feature rubber feet for grip and stability. A high traction punch plate surface offers incredible grip in all weather conditions."