Ensure your Petersen automatic waterer functions flawlessly with the 6" Float Arm with Lock Nut (Part #100-0810). This sturdy, stainless steel component is designed to maintain optimal water levels, ensuring your livestock always have access to fresh water. The included lock nut provides a secure fit, minimizing maintenance needs. Compatible with various Petersen waterer models, this float arm is both durable and easy to install, making it an essential replacement part for your watering system.