Extra Loud Cat and Dog Bells: Each cat bell contains a stainless steel minimum motion clapper that produces a loud, clear, and pleasing sound with the slightest movement, ideal for training dogs and cats. Easy to Track Your Pet: These dog bells attach easily to collars, allowing you to quickly locate your pets. You can have peace of mind when walking on rural roads or through bushes without worrying about losing your pet. Reliable Material: These pet tracker bells are made of high-quality copper, resistant to wear and rust when exposed to outdoor elements, ensuring durability and long-term use for pets' outdoor activities. Size Information: Each pet tracker bell measures approximately 0.87 inches in diameter, suitable for most small, medium, and large pets. Each set includes 2 bells, which can be used on two separate pets if desired. Practical Gifts: These loud cat collar bells feature a cute design and practical function, making them great gifts for pets. The crisp ringing sound helps alert birds and other wildlife, reducing the likelihood of pets catching them and helping protect local wildlife populations.