Chinese bicycle bell steel

Compared to these bicycle bells, the local ones are just bells, and their sound is so ubiquitous in their homeland that it is simply called the "Sound of China" in travel guides. They are loud, and they have to be, which is clear to anyone who has ever seen one on the main roads in Beijing or Shanghai: The bicycle bell is essential for survival there, and the Chinese operate them practically every meter of the way to draw attention to themselves in the hustle and bustle of traffic. They are therefore designed for this constant mechanical stress: made exclusively of metal parts, and the slightly time-delayed double sound is produced by the lever hitting a metal clapper on both sides of the respective bell shell via strong springs. You should provide the mechanism about once a year with a drop of oil.