Which of the following is a common material used for rigging hardware?

Aluminum is a common material used for rigging hardware due to its combination of lightweight properties, high strength-to-weight ratio, and resistance to corrosion. This makes aluminum particularly advantageous in theatre rigging, where reducing weight while maintaining structural integrity is crucial for safety and efficiency. Additionally, aluminum can be easily machined or formed into various shapes and sizes, making it suitable for a wide range of rigging applications, from lifting and suspending equipment to constructing custom rigging solutions. The use of aluminum supports both durability and the capacity to handle the dynamic loads often encountered in theatrical environments, ensuring reliable performance throughout productions.