Lifting hook

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A lifting hook with a safety latch.
Lifting hook attached to sheave suspended by wire rope from boom of crane
The automatic crane hook: lifting and rigging chain hooks

A lifting hook is a device for grabbing and lifting loads by means of a device such as a hoist or crane. A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the load is attached.

A hook may have one or more built-in pulleys to amplify the lifting force.

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Media related to Lifting hooks at Wikimedia Commons