Satisfaction Guarantee:We offer a lifetime of support to our customers, simply message us directly and we’ll always be happy to answer any questions you have and resolve any issues if they come up. If you’re unhappy we’re happy to give you a full refund. How to use: Appropriate key ring size design, easy to attach to a variety of D-rings, suitable for all kinds of small and medium pets, can be easily removed from the collar or other pendants when not in use. Material: High-quality brass material, smooth and tough surface, corrosion-resistant and dirt-resistant.Cats and dogs especially spend a lot of time outside, so we've made sure these bells are built to last. Size: 0.8 inches in diameter, weighs only 5 grams, lightweight and comfortable, light to wear, the sound like sleigh bells, allowing you to easily track your pet's exact location.Birds and small wildlife to hear when your cat or dog may be trying to persue it, giving it enough time to escape. Package contents: you will get 1 strings of extra loud cat & dog collar bells,each string comes in 2 pieces of bell and 1 piece of key ring.