Designed for small cruisers, runabouts and sailboats with unsual gunwales, where a standard ladder is not practical. the overrail hooks snap into mounting sockets (included) suitable for temporary or permanent mounting.Durable 1" dia. aluminum tubing with comfortable molded plastic stepsThe adjustable standoffs have cushioned tipsHooks and standoffs fold flat for storageFour steps43"LHooks: 13"W