Professional Series Pop-Ups: The Professional Series pop-ups offer the quality and features required by irrigation professionals at popular prices. Available in 3" and 4" heights, the 7800 series has the following features: - Corrosion resistant ABS body and piston construction. - Coarse thread screw top prevents cross threading. - Ratchet collar and easy grip cap allow easy direction adjustment after installation. - ½” FIPT, full flow inlet and full water flow piston design allow for optimized water usage. - Heavy stainless steel spring provides positive pop-downs. - Flexible wiper seal and spring retainer prevent contamination. - Built-in filter is easy to service from the top. - Color coded pattern labels for quick identification. - Features Toro interchangeable nozzles with stainless steel distance adjustment.