This is a 7" Dual Power Brake Booster with a 1" Master Cylinder designed for 1957-1972 Ford F-100 trucks. The set includes the Brake Booster and Master Cylinder, both made of cast iron in a golden color.
7" Dual Brake Booster & Ball Milled Master Cylinder +Under Dash Brake Pedal
1955 1956 1957 Chevy Car Chrome 7" Dual Brake Booster + Master Cylinder Bel Air
Dual Diaphragm 7" Power Brake Booster Chrome Universal Hot Rod Universal GM
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Dual Diaphragm 7" Power Brake Booster BLACK Universal Hot Rod Universal GM