Waterproof Bike Bottom Bracket Ceramics Ceramics BB30

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Description:

-This Threaded Bottom Bracket BB made of 7075 Aluminum alloy shell- anti-scratch, wear-resistant and waterproof
- High strength ceramics/ steel Bearing reduces abrasion, vibration and makes maintain easier and integrated can protects the frame, more power output
-Carbon steel bearing
-Featuring super precise accurate threads for smooth operation and improved durability
-Screw threaded for easy removing and installation; comes with 3 washers for different size BB
- 24-24mm, or 42 inner diameters, width 68-73mm bottom brackets

Specification:

Width: 68-73mm/26.7-28.7 inches
Diameter: 42mm/16.5 inches

Package Includes:

1 Piece Bike Bottom Bracket

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