Very strong FUR SAVER COLLAR for large and extra large dogs - WIDTH 4 MM -51604(02) - hs3 ( Made in Germany ) : Prong Collars, Pinch Collars, Dog Training Collars, Curogan Collars, Chain Dog Collars, Fur Saver Collars, Choke Dog Collars, Herm Sprenger Collars, Dog Muzzles