AWS 501 is an accessory specifically designed for the WTS 1206, WTS 905, and WTS 708 lifters. It is fixed on each bar of the horizontal support and provides a carabiner attachment point to lift chains or line array systems. The product is categorized under the WTS Series (Front Loaded) and described as an accessory for line array applications. The available information does not specify material, weight, dimensions, load rating, certifications, or any included components.