Shimano Octalink BB-ES51, V2, 68mm X 118mm Bottom Bracket. Bottom bracket is new, but I'm listing it as used, due to the non-drive side locking ring being used. Locking ring taken from another used bottom bracket. This is a great deal if you need this size bottom bracket. Please review the photos and feel free to ask any questions. I am cleaning out my closet, so please take a look at my other auctions. No international shipping.