Carburetor Inlet Fittings 7/8-20 Male To 3/8 Inch Hose Barb Brass Fits Most Late Holley Carburetors & Quadrajet with 7/8-20 Threads Mr GasketMr. Gasket adapter fittings are engineered for competition use with thin wall designs that, combined with easy gradual curves, allow maximum fuel flow and minimal restriction. Fits Most Dual Feed Carburetors w 7 8 Inch 20 Threads Fits 3 8 Inch Fuel Hose Includes Gaskets and Clamps Fits Holley Dual Feed Carburetors w 7 8 Inch 20 Threads Fits Quadrajet Details: Adapter Port Size ( B ): 7 8 20 Holley Quadrajet Adapter Type: Carb Adapter Angle: Straight