Brass Fur Saver Collars - 3mm Medium Link: Solid brass fur savers are popular collars for large breed dogs with plush coats. Oval shaped links do not pull the hair on the dog's neck. Links can be clipped back on dead on various links which works great for growing puppies and show collar for German shepherds. To order the correct size, measure your dog's neck and add 2-3 inches. Make sure you add enough to go over your dog's head. Brass will tarnish and appear darker over time. Polish can be applied to remove tarnish.