This is the handbrake (Emergency brake) lever spring for Tube-Type rear axle cars (MGB Roadster 1968 to 1980 and MGB-GT 1966 to 1975). Over time heat from the rear brake shoes can deteriorate the spring and it will loose its tension. For some reason this spring is not a part of the rear brake spring kit so we have to offer it separately. Two will be needed per car. Replace your spring every time you change the rear brake shoes.