Material: Iron Bell + PolyesterColor: BlackBell Bottoms: 7Weight: 140gThe high-quality leather material is durable. This dog training bell is made of leather material, which is very durable and has a longer lifespan than other cheap ribbon substitutes. This type of dog training bell can endure pulling and biting. Dog Training Bell makes dog training a simple and effective way, and agrees with pet professionals through. The Dingdang leather bell is the solution to all your dog's training problems! Our bells are specially designed for sound quality and durability. The sound quality of dingdingdanga not only sounds great, but it's also strong enough to withstand the pressure of most naughty dogs. Adjustable length, which makes it easy to adjust the length to the bottom of the door. The design is easy to install, can be hung on any level, suitable for any breed of dog. Packing List:1pcs Dog Doorbell