Stainless steel exhaust manifold stud kit for L series enginesin 8mm. Will fit Datsun 240Z, 260Z, 280Z, and 280ZX, 1970-83. These stainless studs have allen heads on the end for easy installation. Includes thick washers and serrated flange nuts. Includes a set of 11 for the exhaust manifold. We have a separate intake manifold bolt kit that will work with this kit.