The hook is one of the important accessories of the chain block. The hook is divided into the upper hook and the lower hook. The upper hook is used to hook the chain block, and the lower hook is used to lift heavy objects.

There is a small accessory tongue at the hook of the chain block, which can play the role of barrier protection. When lifting heavy objects, if there is shaking, the tongue will play a protective role to prevent the heavy objects from falling.