Easy to Use and Place. It can be placed in any flat place, you just need to teach your dog to press the button at the top of the bell. Materials and Design. The body of the bell is made of stainless steel, and the base is non-slip rubber. Perfect Training Tool. Make your dog more disciplined and smarter. Uses: Can be used as meal bells, dog training bells Material: Plastic, Size(DxH): Approx. 7.2x5cm/2.83x1.97inch Package Includes: 1 Piece pet training bell Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item. Customer satisfaction is our primary concern. If the product is somehow cracked or broken during shipping, please feel free to contact us. We will try our best to give you a satisfactory solution.