Heavy duty roof ridge ladder hook features a swivel head and fixed caster wheel. Ideal tool for safely climbing on roofs and helpful when working with weak decking, wet or icy surfaces, and steep pitches. Swivel head angles across roofing contours for maximum contact surface. Secure ladder to roof by attaching ladder hook, rolling the ladder up the roof, and flipping it over so the hook sits on the opposite peak. Reinforced rod around the hook provides 300 lb. Capacity. Fits d-rung and round rung ladders. Folds flat for storage. Color: Yellow. This product is manufactured in United States. This product meets customer requirement.