Trendy Black Steel Dog Handler - Herm Sprenger Dog Pinch Prong Collar of Stainless Steel 50004 010 (57) 1/8 inch (3.2 mm) : Prong Collars, Pinch Collars, Dog Training Collars, Curogan Collars, Chain Dog Collars, Fur Saver Collars, Choke Dog Collars, Herm Sprenger Collars, Dog Muzzles