MULTI-FUNCTIONAL: The dog training ring set can help your dog and cat develop good habits and make your dog and cat more disciplined and smarter. This is the tool ideal for feedingpets, potty training, house training or teaching pets to ring the bell. Safe and Reliable: This training bell is made of high quality steel and plastic, not easyto rust and warp. Odorless, safe, non-toxic, with beautiful paw prints on it. EASY TO USE: No installation required, just place it on a flat place such as ground, ground and lawn. Teach your baby, dog or kitten to press the center button with their paws or nose and use it in anatural and comfortable. After ringing the doorbell, the reward can be given. Pleasant Ringtones: The ringtones of this product are set by master mechanics, the ringtones are not only loud and clear, but also crisp and bright like wind chimes, rather than annoying noises. For small dogs and cats: 3 pack. This towel-sized pet trainer measures 7.2cm in diameter Pet training bells are a great and fun way to train your dog to communicate at home Specification: Material: metal and plastic Color: red and blue and gold Size: 7.2x5cm Quantity: 3 The package contains: 1 blue pet training bell 1 gold pet training bell 1 red pet training bell