Ball End Hooks For Plastic Clothes Hangers 585, 584, 579. Made by mild steel, then zinc plated. Our Clips are able to withstand 120 hours salt spray test without red rust, rating 5-6 marks for 24 hours. With steady quality, our hooks are very suitable for auto assembling without problem of deforming. Acme products got solutions for your problems. We design and engineer special hooks for customers. Hooks for every style of hangers are available.