Bearing: sealed bearingName: Threaded bottom bracketSpecifications: Suitable for frame bottom bracket 68-73mm, tooth pattern BC1.37-24T Sealed bearing structure, Avoid penetration of moisture and dust ① "L" is left, "L" is right ② The bottom bracket can be disassembled with a 44mm bottom bracket wrenchColour:black / Red / ColorfulMaterial:Aluminum alloySize:99.7 X 24mmPackage Contents:1 * bike Bottom Bracket1 * wrenchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.