Brand New Holley Jet Assortment Kit (Part #36-181) The Holley jet assortment kit is the professional way to track-tune your Holley carburetor for top performance. This kit consists of two (2) each of thirty-six (36) different jet sizes, ranging from #64 to #99. The jets are contained in a plastic case that is designed to keep them separated and make them easily accessible. Jet sizes selected will give the broadest range of adjustment and tuning for most performance carburetor applications. Features: 2 Each Of Jet Sizes 64-99 Contained In Plastic Case Separated and Easy Accessible Fits Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500 Carburetors Specs: Emission Code: 5 Product Type: Jet Assortment Kit