Park Tool BBT-29 Bottom Bracket Tool (39mm, 48.5mm 16-notch) - BBT-29
Park Tool BBT-29 Bottom Bracket Tool (39mm, 48.5mm 16-notch) - BBT-29, The Park Tool 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(R) Dura-Ace(R) 9000 series and XTR(R) 980 series) as well as 16-notch bearing cups with an outside diameter of 48.5mm (e.g. FSA(R) MegaEvo(R)).