External BSA Ceramic Bottom Bracket with Ceramic Bearings by World Champions ACER Racing. For English threads 1.37" x 24TPI 68mm. Will fit Shimano Hollowtech II ROAD Cranksets

Also available in Red color under eBay item 261276275888

Please see our full line of bottom brackets with our world famous Ceramic Bearings in our eBay store under "Bicycle Race Parts"