Crown of Thorns Black Stainless Steel Extra Link for Neck Tech Sport Collar - 1 ¼ inches (3 cm) : Prong Collars, Pinch Collars, Dog Training Collars, Curogan Collars, Chain Dog Collars, Fur Saver Collars, Choke Dog Collars, Herm Sprenger Collars, Dog Muzzles