Sensitive and Reliable: Featuring a stainless steel minimal motion clapper, these bells are highly responsive to the slightest movement. You can trust that they will ring effectively, allowing you to keep track of your pet even when they are out of sight Enhanced Safety and Wildlife Protection: These brass pet bells have a loud and distinct sound that alerts birds and small animals to the presence of your cat or dog. This gives them valuable time to escape, ensuring the safety of both your pet and the wildlife they encounter Value Packed Gift Set: With each purchase, you'll receive 4 sets of dog and cat collar bells. Each set includes 2 bells and a metal hanging ring. This value gift package provides you with multiple bells to use or share Wide Usage: These collar bells not only serve as functional accessories but also double as adorable decorations for your pet's collar. You can also use them to add a touch of charm to keychains, backpacks, home furnishings, and more. Their easy to use design ensures effortless attachment and removal Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.