From 1989 minis which have the brake servo built into the master cylinder and it is very difficult to work in the engine bay, especialy clutch changes because of the extra room taken up by this dual cylinder. By replacing the 2 metal brake pipes from the servo and fitting these 2 strong flexible braided hoses it means you can unbolt the servo and move it around the engine bay without having to dismantle the pipes ever again which in turn meant having to bleed the brakes every time.