This high-quality Carburetor Base Plate Gasket is designed to fit perfectly on a 4 Barrel Carburetor with a 4 Hole Square Bore and a thickness of .060\". It is made by the renowned brand Flatout and is an excellent choice for anyone who wants to improve the performance of their vehicle. Whether you are a professional auto racer or just a car enthusiast, this Gasket is a must-have for your vehicle. With its superior materials and advanced design, it ensures optimal airflow and maximum fuel efficiency. So, if you want to get the most out of your carburetor, order this Carburetor Base Plate Gasket. Thanks #464M