The Jones Stephens Cleanout Cover is a genuine OEM replacement made of brass, with a 4-1/2" diameter designed specifically for industrial plumbing and fixtures. This high-quality cover ensures a secure and reliable solution for maintaining and repairing plumbing systems in various industrial settings. The Jones Stephens brand is known for its durable and dependable plumbing accessories, making this cleanout cover a trusted choice for businesses and industrial applications.