bingpet 6 sets bell for cat dog collar charm, cute and durable pet pendant accessories for small pets bingpet 0.6 inches diameter, small and exquisite; metal material, chrome-faced, tough and corrosion resistance is strong. <br>if your pet is very quiet and likes to get behind you and very close to your feet, you can use it on his/her collar, easily find them when they are hiding. <br>not too loud but loud enough to hear throughout the house. <br>these bells are the perfect size for small dogs/animals.