Titan Vinyl Comfort Tips for Dog Prong Training Collars can be added for comfortable, yet effective correction. Available in fine, medium, heavy and extra heavy gauges, each pack contains tips to cover each prong in the corresponding collar size. Titan chain is argon welded and chrome plated for maximum strength and durability. It will not tarnish, rust or break. Chain training collars are safe, effective training tools with proper use. They are not to be used for tie out.