A. Product material: Carbon steel + plastic B. Product size: The bottom diameter is 8.5 cm and the height is 5.5 cm C. Features: It is made of stainless - steel metal material with a chrome - plated surface and has a smooth appearance. The silver top and matte black bottom create a modern and professional atmosphere for workplaces. D. Loud and pleasant sound: These bells are durable and can maintain their functionality after multiple uses. Their sound is loud enough to attract attention and is pleasant to the ear without causing discomfort. The base has an anti - slip function, so it is less likely to move and won't damage tables, desks or countertops. E. Multi - functional use: These bells also have many uses at home. They can be used as a substitute for bells in board games and can be used as a fun way to start tournaments or professional game/sports events.