Pet Supply Imports Herm Sprenger Humane Choke Chains for Dogs are expertly crafted and beautifully chrome plated choke chains. Proud of the "Made in Germany" label, Herm Sprenger strives to ensure that the K9 equipment that carries their logo meets or exceeds the highest possible standards for quality. Sprenger achieves this by utilizing only the finest materials and components. These chrome-plated German steel chains are guaranteed not to break, tarnish or rust. If you have one that did, then it wasn't a Herm Sprenger. Measure for a choke chain or fur saver collar around the largest part of your dog's head, then add 2". Select the chain size that is equal to or larger than this measurement. Herm Sprenger - strongest chain in the world!