K-Rain 78004 4" Pro-S Sprays Pop-Up is designed to provide long life and outstanding performance. The result of precision engineering and extensive field testing by contractors around the world, the PRO-S™ is designed to provide long life and outstanding performance. PRO-S™ sprays are distinguished by robust construction, rugged body and cap, co-molded seal, and heavy-duty retraction spring. PRO-S™ sprays are compatible with all standard female-threaded nozzles. The co-molded wiper seal ensures proper operation time after time with minimal flow by.