Genuine BMC replacement part | Fits Speedmachine 00 and Speedmachine 01 Gen 1 | Contains: - 4x Hex socket flat countersunk head screw, M4 x 16 - Cover (to use with 1x drivetrain, single chainring - no front derailleur) - Front derailleur hanger Standard (to use with 2x drivetrain, double chainrings standard, standard mount height 141mm to 153mm, fits SRAM 46-54, and SHIMANO 50-56) - Front derailleur hanger High (to use with 2x drivetrain, double chainrings big, high mount height 153mm to 161mm, fits SRAM 52-59, and SHIMANO 56-60)