This large knob, spring-loaded for Types PF11MF and PF12MF, is designed for precise and effortless installation in close centerline-to-edge applications. With a unique design that eliminates the need for high installation force, it offers convenience and efficiency. Suitable for use with panels of any hardness, it ensures a secure and flush fit on the backside of the panel. Its versatility and ease of use make it an ideal solution for various industrial applications.