Description:

Material: Metal. Screw Size: approx.0.7x3.1cm(0.28x1.22")(DxH). Spring Size: approx.0.7x1cm(0.28x0.39")(DxH). Compatible With: Fit for Ford Motorcraft 2100/2150/4300/4350 Holley 1bbl Carburetor. It can well adjust the idle speed of the engine.