Park Tool  BBT-7 Lockring Wrench

The BBT-7 Lockring Wrench is used for installing and removing the lockring used on Dura Ace® 7700 and XTR® 950 Bottom Brackets. It is laser cut and engages five of the lockring's six notches for a precise, secure fit. The handle is vinyl dipped for comfort. While made specifically to fit Dura Ace® and XTR® Lockrings, it also fits several other lockrings as well.