The Vevor ladder leveler is designed to keep your ladder stable on stairs, curbs, gravel, grass, and other uneven surfaces. Its carbon steel construction and anti-slip rubber feet provide durable, secure support for safer setup and use. The leveler offers an adjustable range up to 13.78 inches and supports loads up to 550 lbs. It is compatible with fiberglass, aluminum, telescopic, and straight ladders. This permanently fixed design installs quickly to improve ladder stability across a variety of job sites.