This high-performance engine valve set is designed for use with SBC Severed Duty engines and Manley 2.02 .200 long for roller cams. Made from NK-844 stainless steel, this valve set is built to last and provide reliable performance. The set includes all necessary valves for proper engine function and is compatible with a variety of car and truck models. Manufactured in the United States, this valve set is a top-quality product that is sure to improve engine performance. Whether you are upgrading your valvetrain components or simply looking for a reliable replacement part, this high-quality valve set is an excellent choice. With its durable construction and superior performance, this valve set is sure to provide your engine with the power it needs to perform at its best.