These snap hooks feature a key-lock connection for added security. Spring-loaded closure enables quick attachment to a wide range of fixing points. Constructed of formed 316 stainless steel for corrosion resistance and durability. Multi-functional they can be used for lifting, rigging and anchoring applications. For use with ropes, chains, straps and small diameter cable. A 5/16" B 3-1/8" C 7/16" D 7/16" Break Strength 1,700 lbs. Pkg. Card