These galvanized screw pin anchor bolts are sturdy. Made of galvanized steel, the anchor shackle is a strong and durable accessory for wire rope, nylon slings, and polyester slings. Together with a lifting sling, they help protect the eyes from the sling from wear on the fork hooks. They come in various sizes and strengths ranging from 3/8 "- 2" and 1 ton - 35 tons. This fork can be used in many applications, such as industrial, agricultural, and marine applications.