9" Delco Style Single Power Brake Booster Kit For Chevy A-Body Chevelle,GTO,Camaro/Firebird. 9" Delco Style Power Brake Booster. Brass Proportioning Valve PV-2 (Disc / Drum),Zinc finish. 1" Bore, Cast Iron, four port master cylinder, 1/2" & 9/16" Ports on both sides (Plugs Included).
