Swivel hooks at top slip onto edge of bunk to hold ladder in place. Step surface is 9 1/2"W x 2 1/4"D with non-skid surface. Non-skid leg tips. 13"W overall. Made of 1" dia. aluminum tubing with extruded treads. Anodized black finish resists rust and corrosion. Supports up to 300 lbs. | Stromberg Carlson Black Bunk Ladder - 66" L