Dog Training Bells are the pefect solution to toilet train your lovely pet. It is proven to be an Easier, Better Way for your dog to communicate Instead of barking and scratching. 7 Big Extra Loud Bells yet easy on your ears to attend to your pet's nature call wherever you are in the house. Tasteful design of silver coating of bells keep them shiny and jingle sounds are easy on your ears from the playful dogs. Made from heavy duty nylon material, durable and chew resistant 2x7pcs 1.4"" extra loud stainless steel bells, shiny and jingle! Ergonomic design allows for easily adjusting the length between from the ground . Black strap with polished metal hardware looks great in virtually any home. Dual snap rings make it easy to hang on any door at the height you choose.Its ergonomic design allows for easily adjusting the length between 12"" and 15"" from the ground - depending on the size of your dog. Larger thick-walled jingle bells, the metal dog doorbells ring loudly and clearly every time! Make you hear your puppy's requirment at once and avoid any accident. Specifications: Product Dimensions: 2.5x85cm Bells Dimension:1.4"" Net Weight: 300g Material:Nylon and Brass Package included: 2x Dog doorbell