Rigging Chain Slings are Grade 100 heat treated alloy chains for attaching to steel beams or purlins in speaker rigging projects. They go over the steel beam and are joined by one shackle at the end links. Design factor is 10:1. They come in three standard sizes and can be made to custom lengths. Rigging Chain Sling kits are also availalable with higher load capacities using heavier chain.