This package is for a set of Matching Stainless Steel Hardware and Neo Chromed Anodized washers. This set includes bolts and washers to mount your M112 Plenum to the Body of the Supercharger, bolts and washers to mount the throttle body to the plenum, stews and washers to mount the idle control valve to the plenum. This Package has Neo Chrome Cup shaped washers, for other colors or styles see my “other items”.