Shackles are a type of rigging hardware that are used to connect various components in lifting and rigging applications. They consist of a Bow-shaped or D-shaped body and a removable pin or bolt that secures the body closed. Shackles come in various sizes and configurations to suit different applications.

Shackles are commonly used in a wide range of industries, including construction, maritime, oil and gas, mining, and transportation. They are used to connect lifting slings, ropes, chains, and other components to cranes, hoists, winches, and other lifting equipment. Shackles are also used to connect objects such as anchors, chains, and ropes in marine applications.