Lightweight aluminum center-hung fuel bowls with sight glass windows for easy visual float adjustment. Kit comes with two (2) fuel bowls and two (2) gaskets and anodized aluminum 5/8 x 18 inverted flare fuel inlets. Fits PROFORM, Quick Fuel, and Holley Double-Pumper carburetors. Product Features:Center-Hung Float Model with Sight GlassFits PROFORM/Quick Fuel/Holley 4150 ModelsSilver FinishIncludes All Gaskets & Two 5/8-18 Inverted Flare Fuel Inlets1-inch Stud Length