Park BBT-18 Internal 8 Notch Bottom Bracket Tool YGroup_7157872623661 The SmartGuard provides superior puncture

The SmartGuard provides superior puncture protection

fantastic for long rides on rigid bikes out on rugged mountain paths

won't rust and won't mark up your bottles

You can hook your bicycle up to your friend with an E-Bike or pull a broken motorcycle back to the truck

Control Flex Shank:

Park BBT-18 Internal 8 Notch Bottom Bracket Tool YGroup_7157872623661 The SmartGuard provides superior punctureThe Tool You Need in Your Arsenal to Defeat ISIS Drive and Octalink BB Related Tasks Made from bomb proof, investment cast steel, the BBT 18 has 8 notches with an outside diameter of 43. 4mm and will dominate any tasks requiring the removal, or reinstallation of ISIS Drive and Shimano Octalink thread in bottom brackets.