“Supreme Durability - This potty training dog bell is incredibly durable, is made from a durable nylon material. The potty bells are the loudest metal doorbell available on the market today and ring loudly and clear every time. ^ Great Training Device - Instead of hearing puppy barking and scratching, hear the slight tinkling of potty bells, we provide a better and easier way to communicate to your dog. ^ Train almost any puppy, doggie or adult dog quickly and easily to let you know when he or she needs to go. Our door dog training bells are your best choice. ^ Maximum Comfort - There is 1 dog bell.There are 2 doorbells at the bottom Our high quality dog bell or high pitched; Comes with a snap which makes it easy to put on. Use on any type of d i door handle. Small dogs, medium dogs, large dogs and large dogs all love our dog bells. A wonderful gift for you and your lover. ^ Unique grip rivet - Our grip rivet is adjustable and can be tightened. on handles or hooks of any size, to