Self-locking swivel hook Grade 80 is designed with a swivel mechanism that allows it to rotate or swivel, which can help prevent the load from twisting or becoming tangled during lifting and rigging operations. This swivel feature can be particularly useful when lifting loads that may have a tendency to spin or turn.Grade 80 swivel hooks are commonly used in various industries for heavy lifting tasks. They are often used with slings, chains, and other rigging equipment. The Grade 80 steel provides the necessary strength and durability to handle heavy loads safely and efficiently.It is designed with a mechanism that automatically locks the hook in place when a load is applied, providing added safety and security during lifting and handling operations