Polaris 4-9-546 Cleaning Head, Zodiac Polaris, Hi-Flo, BlueThe Caretaker Pop Up, High Flow Threaded Cleaning Head is a replacement part designed for the Caretaker In-Floor Cleaning System. The Caretaker Pop Up, High Flow Threaded Cleaning Head is a replacement part designed for the Caretaker In-Floor Cleaning System and works by aggressively propelling strands of water across pool surfaces, guiding and removing debris and leaves from your pool for high-powered performance. Available in Light Gray, it threads securely into an available collar fitting with a quick quarter turn and has 3.5" x 2" dimensions.