Birzman Bottom Bracket Cup Tool Adapter (for BB9000 & BBR60)

Convenient adapter allows you to use your standard Hollowtech II BB tool on a BB9000 or BBR60 bottom bracket.

• Constructed of hardened steel
• Laser etched makings indicate BB type
• Insert into any Hollowtech II bottom bracket tool for compatibility with newer generation 39mm and 41mm outer diameter Shimano external bottom brackets like those found on Dura-Ace 9000, XTR 9000 and Ultegra 6800