Made of polished finish 316 grade stainless steel. Ideal for Boat, RV, Trailer, Camper and a wide variety of uses. Its highly durable, heavy duty, corrosion resistant, high strength and easy to install. The spring loaded folding mechanism will keep the step in an open or closed position without rattling. This versatile folding step has many possible uses. When mounted on the outside of the hull, it makes an unobtrusive boarding step for exiting a dinghy. It also serves as a lower mast step for attaching halyards, reefing, and furling operations on large ships. Dimensions: 4-1/5 inches x 3-1/3 inches, large size. Package Includes: 1 pcs of Marine City Heavy Duty Stainless Steel Folding Step.