Bicycle Sprocket Plate 27-Speed 3-Piece Large Sprocket Bicycle Racing Sprocket 42T Sprocket for 104B

Labeling and mesh perfectly with drivetrain families arms increases the strength and reliabilitSmooth shifting 8\/9-speed chainringsClassic square interfaceSteel Double Hex Type BoltsBottom bracket is not included with this cranksetChainrings: 42TCrankarm Length: 175mm825gcolour:blackMaterial:alloysize:Disk nail aperture 10mmPackage Contents:1 * large chainringOnly the above package content, other products are not included.Note: Light 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.