American Bottom Bracket Bearing Cup. For #66 bearings (5/16" X 12 bearing).
Great to retain a vintage bottom bracket (Tange, Sugino, Schwinn, etc.), but without the old rusty cups.
Fits 51.5mm (2") bottom bracket opening.
Finish: SILVER (this is called UCP in the bicycle industry and is NOT chrome).SOLD IN PAIRS (AS SHOWN)