Fully welded links are certified, ultra strong links. Training snake chain for exercising and training your pet, safety to operate. The heavy chain collar is made of copper for maximum strength and durability. Training your dog is easy with our chain training collar. Safe and effective way to train your dogs with our chain collar. Designen to tighten under tension, correct the wrong behavior by pulling the leash with a gentle but effective feedback. Solid stainless steel metal will never tarnish, rust, or irritate your dog's skin. Polished finish - smooth, comfortable links won't damage or pull out fur and make for one cool dog collar. This is the ultimate balance between durability, functionality, and aesthetic appeal. Enhance your training with our chain-based collar. The iron components of our collar create an audible sound that further reinforces your training.