What is a 'shackle' and what rating must it bear for stage work?

• A. A type of rope decoupler.
• B. A U-shaped connector with a pin used to join rigging components; it must be rated to the required Working Load Limit.
• C. A decorative hook used on set dressing.
• D. A metal carabiner with a locking gate.

Answer: (B)

Shackles are U-shaped metal connectors with a pin that joins rigging components such as wire rope, chains, or slings to create a load path. For stage work, they must be rated to the required Working Load Limit, meaning the shackle is specified to carry at least the load you expect to lift or support. This rating, the WLL, is what keeps the rigging safe by ensuring the device can handle the forces involved without yielding or failing. The other options describe different hardware (a rope decoupler, a decorative hook, or a carabiner) and do not fit the standard definition of a shackle.