Dimensions: 15 cm Sturdy construction: every functional hand bell is composed of sturdy iron and has a solid wood handle that is easy to grip, lightweight, and resistant to bending; These hand bells will produce a loud sound that will help you draw attention from other people. Simple to use: all you have to do to train your dogs with these call bells is gently shake the loud call bell to produce a loud noise that can activate different parts of the brain; Elderly people can use these loud call bells to get your attention without having to expend much energy. Numerous events: these hand school bells can be used for a variety of events, including