12 mm disneyish themed collar bell for pets. Available in black or white. Choice of attachment in a secure split ring or an easy to change lobster claw. The bells are durable enamel over metal alloy. The attachments are sterling silver plated. The sound is pleasing and louder than my average bells. I do recommend the split ring for very active pets as well as a pet that goes outdoors regularly. Makes a great gift for a new pet parent. Also good for pets that are hard to locate in dimly lit areas.