The Andersen Hitches HELUX Lockout Kit is required for all HELUX pin boxes and provides essential protection for your Ultimate 5th Wheel Connection and your vehicle. It stabilizes the pin box to prevent unwanted movement and pressure on the ball, helping maintain consistent performance and long-term durability. Stabilizes the pin box to prevent unwanted movement & pressure Helps maintain consistent performance & long-term durability | Andersen Hitches Lockout Kit for HELUX Pinbox