Dean & Tyler Herm Sprenger Choke Chain Collar, Short Round Links - 2mm Size:24" (60cm) Keys are available for both

Keys are available for both the original style lock and newer indicator door locks that have a red/green display

More Advanced Features:AUTOMATIC CLOSE CONTROL: Your POWER PET PX Features a smart sensing circuit that keeps the door panel open as long as it is receiving the signal from your pet's collar

Duplex outlet mounted on the base frame

The dog agility tunnel & sandbags can be used indoors or outdoors

Dean & Tyler Herm Sprenger Choke Chain Collar, Short Round Links - 2mm Size:24" (60cm) Keys are available for bothThis chain style dog collar can be used as both a decorative collar and a functional training collar. An ideal choice for short haired dogs. This collar runs smoothly through the rings due to the shorter links. All collar measurements include both large O rings at each end. Collars are measured from the outermost edge of one end ring to the outermost edge of the other end ring. To determine size: measure around your dog's head and add 2 inches. Select