| 摘要 |
A chain with an easily adjustable number of links for bicycles. The chain has links each having a first outer chain plate, a second outer chain plate, a first inner chain plate, a second inner chain plate, and a pin. The first outer chain plate has two holes each defined by overlapping circles of different diameters, forming a figure-eight outline. The pin has a flat button at an end thereof, a neck at the other end thereof, and a dome button formed on the neck.
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