Park Tool BBT-29 External Bottom Bracket Tool

• Double-ended wrench fits two different external-notch bottom bracket tool fittings
• Compatible with 16-notch fittings with a 39mm OD and 16-notch fittings with a 48.5mm OD
• Fits Shimano Dura-Ace 9000 series and XTR 980 series, FSA MegaEvo, and others

The BBT-29 is a double-ended bottom bracket wrench designed to fit 16-notch bearing cups with an outside diameter of 39mm (e.g. Shimano® Dura-Ace® 9000 series and XTR® 980 series) as well as 16-notch bearing cups with an outside diameter of 48.5mm (e.g. FSA® MegaEvo®).