The Anchor Base with Stud includes the hoist anchor base, threaded rod, washer and nut. It accommodates a variety of shackle types. It is made from grade 316 stainless steel for maximum corrosion resistance and durability. This base is offered in sizes ranging from 1/4" - 1" to fit a wide variety of lifting applications. The Anchor Base is primarily used as a way to attach lifting points to objects with no natural attachments. It features a set screw for securing it to the stud. The shackle hasmore a 180 degree pivoting capability and the base can be secured in the desired position to provide a full range of motion. less