Park Tool Bottom Bracket Tool - Shimano Dura-Ace 9000, XTR 980, FSA MegaEvo

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®).