The Holley Universal Carb Installation Kit contains all the hardware necessary for most installations of a new 4 bbl carburetor including: mounting studs (including one extra long stud for securing throttle cable / kickdown cable brackets), washers, nuts, air cleaner stud, vacuum caps, 3 different throttle cable balls, bushing adapter for large hole of throttle lever, air cleaner gasket and base gaskets for square and spread bore carbs.