Keep your dog safe in case of equipment failure with this prong backup. Stay connected even if the leash clip or prongs comes loose.
Clip one end to your dog's flat collar and one end to the dead ring of the leash clip (my preferred method, but it does not work with the large brass leash snaphooks due to sizing.)
You can also clip one end to the prong collar (the unused ring when possible) and one end to the flat collar. Approximately 8 inches long to work for most dogs.
