Park BBT-29 Double Ended 39 48.5mm 16 Notch External BB Tool PDP|PLP|Rail Material 360 stretch material with dirt

360 stretch material with dirt

They are probably best suited to gravity style riding where there won't be too much pedalling though

even if it’s engaged

Replacement Seal

16 or 20g cartridge or storage capsule

Park BBT-29 Double Ended 39 48.5mm 16 Notch External BB Tool PDP|PLP|Rail Material 360 stretch material with dirtThe BBT 29 from Park Tools is a double ended tool that will handle both 48. 5mm and 39mm outside diameter bottom bracket cups. The 39mm end is the right size for XTR BB93 (as well as DuraAce 9000 and some Token BB's) external bottom brackets, while the 48. 5mm end is right for FSA Mega Exo and all Wheels Manufacturing bottom brackets. Both ends have 16 notches. Park Tool quality means this will still be in action in a centuries time.