Herm Sprenger Prong Dog Collars
Superior to most on the market.
Unfasten one of the prong links and place the collar around your dog's neck before refastening. Made of high-quality German steel. Heavy duty links for strength and durability. Tips are slightly beveled and polished to prevent injury to the dog. To adjust size, add or remove individual prong links. Chrome-plated.
Replacement links also available (sold separately).