The 4" x 5" Kerick Float Ball is a durable and reliable float ball designed for use in various pool and spa systems. Made from high-quality polyethylene, this float ball is resistant to corrosion and deterioration from sunlight, ensuring long-lasting performance in demanding environments. It features a 1/4-20 self-tapping thread size for secure attachment and is molded as a single piece to resist leakage. Ideal for regulating water levels, it works effectively in applications like float valves and chlorinators.