Bicycle chain
Roller chain that transfers power from the pedals to the drive-wheel of a bicycle / From Wikipedia, the free encyclopedia
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This article is about the drive chain on a bicycle. For bicycle chain locks, see Bicycle lock.
A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it. Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.