Metro Turbo Vented Brake conversion kit. Only for use on existing caliper type hubs as used on Cooper S, 1275GT and all Minis from 1984 on. Requires 12" or 13" wheels to fit. The calipers are New reconditioned as the factory stopped fitting them 10 years ago.Also see kit C-AJJ4029A for the full kit including hubs,bearings and cv joints when changing from early drum brakes where the hubs are different