This mechanical chain hoist is designed for commercial building sites and industrial workplaces such as warehousing buildings storage areas and factories. It features lightweight construction for easy mounting but offers a high weight load limit. With a roller bearing in the bottom block it allows users to turn the load without turning the load chain. It also features cast-forge steel hooks and heavy-duty safety latches. Zinc plating inside the chain hoist helps to protect against corrosion. Brand Name: OZ Lifting Products Material: Steel Load Capacity: 500 lb Product Type: Chain Hoist Pull to Lift Rated Load: 27 lb Lift: 10 ft. Hook Opening: 1-1/16 in