Herm Sprenger Black Stainless Steel ULTRA-PLUS Training Collar with swivel and ring, short version, 3.0 mm , 50 cm (20) : Prong Collars, Pinch Collars, Dog Training Collars, Curogan Collars, Chain Dog Collars, Fur Saver Collars, Choke Dog Collars, Herm Sprenger Collars, Dog Muzzles