ULTRA-PLUS Curogan Training Collar with 2 rings, 3.0mm 20in (50cm) Herm Sprenger : Prong Collars, Pinch Collars, Dog Training Collars, Curogan Collars, Chain Dog Collars, Fur Saver Collars, Choke Dog Collars, Herm Sprenger Collars, Dog Muzzles