Kit to fit alloy calipers C-AJJ 4022 or -3 when using vented brake discs from the Metro. Contains 4 spacers and correct retaining clips and pins.The brake disc will require machining down from 8.4" to 7.5" for use on 10" wheels for C-AJJ4023 calipers. Please note: when fitting vented discs the Metro drive flanges NAM6450F must be fitted.