This Holley jet assortment kit consists of 4 EA. of 24 standard length jets that range in size from .132" to .200". These jets will not fit the standard Holley metering block; they are designed to fit only the 750 and 950 CFM HP and 0-80586 DOMINATOR alcohol carburetors featured elsewhere in this catalog. The assortment is packaged in a durable plastic carrying case.