Check the listing for details. American bottom bracket sealed bearing mid conversion cups - BLACK. Color: Black, Condition: New. Listed at 22.99 USD. American bottom bracket cups (PAIR) * Color: BLACK * Bearing outer diameter that fits: 41.5mm ("mid" standard) * SOLD IN PAIRS (as shown) NOTE: Aluminum parts like this will always have small nicks and gouges because of how they're handled during manufacture.