【Package】Bicycle bottom bracket
【Effect】The integrated center axle has an independent rubber seal, a built-in spring that is waterproof and dustproof, super waterproof and extends its service life.
【Size】The bottom bracket with square pin for 68-73 mm bicycle bottom. Quick and easy installation without adjustment.
【Simple】The bicycle bottom bracket is easy to install, remove and replace
【Wide use】This bicycle bottom bracket is suitable for mountain bike MTB