Studio : Park Tool Publisher : Park Tool Binding : Misc. Product Description Double-ended bottom bracket wrench;Smaller end fits 16-notch bearing cups with an outside diameter of 39mm (i.e. Shimano Dura-Ace 9000 series and XTR 980 series);Larger end fits 16-notch bearing cups with an outside diameter of 48.5mm (i.e. FSA MegoEvo) 0
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