WIDE APPLICATIONDog doorbells fits all dogs of all sizes. Easy to use, hang it on any doorknob or Handle. Prevent dog scratching, dog training bell is the perfect choice for you to train your lovely dog. . SUPER DURABILITY Dog bells made from heavy duty nylon material, durable & chew resistant7pcs 1.4" extra loud stainless stell Bells, Shiny & Jingle Easy on your ears to attend to your pet's nature call wherever you are in the house. . ADJUSTABLE LENGTHPuppy doorbells design allows for easily adjusting the length between 33" and 43" from the ground - depending on the size of your dog.Our premium quality dog doorbell comes with a snap, which will allow you to attach it to any door handle or knob. . GREAT TRAINING DEVICE With the simple training guide, training your dog in the shortest time become easierInstead of hearing barking and scratching from the doorbell, you hear the gentle jingle of potty doorbells, This is the best gift for dogs. . WORRY FREEdog training bells guarantee offer the best customer service possible and always stand behind our product. If you have any problem of our product, please feel free to contact us and we will sort things out for you as soon as possible. .