Shimano 42t Teeth Front Chainring [chain ring]
Bolt pattern: 130 bcd (bolt circle diameter). 130 mm road double.
These came from a Shimano 105 crankset from either the late 1980s or early 1990s. See photo for reference to help you date this item.
Used. See photos for condition. This still had life left on them when I took them off.

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