JEGS 50115 Kaase Small Block Ford Valve Covers for Kaase Splayed Valve Heads are manufactured from cast aluminum and display a large raised JEGS logo. The mounting flange is CNC machined to a precisely flat surface that helps to prevent gasket leakage when mounted. These will only fit the Kaase heads due to the repositioned mounting points on the head and require special Mr. Gasket gaskets part# 720-596G.