Nut Replacement: This pool pump cover knob nut replacement is designed to extend durability and lifespan. It is designed to replace for SPX1600PN. Enhanced Cover Knob: The upgraded cover knob is designed to provide a safe and convenient grip for easy opening and closing of the cover. It ensures a tight seal and prevents any leaks. Easy to Install: Installing this cover knob replacement is a breeze. Simply remove the old knob and replace it with this nut replacement. No additional tools or complicated steps are required. : This replacement knob is compatible with covers and is designed for a seamless fit. It ensures a snug fit and ensures optimal performance. Suitable for Public Pools: This pool pump cover knob replacement is suitable for public or commercial pools. It meets the requirements for durability and lifespan, making it a reliable choice for high-traffic pool areas. Color: As shown Material: plastic+metal Package Contents: 1 set Swivel Nut Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.