UMI Performance 64-77 GM A-Body Complete Rear Control Arm Bolt Upgrade KitDon't reuse your old rusty bolts when installing aftermarket control arms when you can replace them with new one. Our kit includes all new hardware for installing both upper and lower rear control arms in your GM vehicle. Supplied is (8) 1 2" Grade 8 bolts, (8) 1 2" nylon lock nuts and washers. Complete kit is zinc plated and is everything you need to install that complete control arm kit! This Part Fits: Year Make Model Submodel 1970,1972 Buick