Forney 75141 Pressure Washer Accessories, Sewer Nozzle, 1/8-Inch Female NPT-by-4.5mm, 4,200 PSI Stainless steel sewer nozzles slide easily into drain pipes and sewer lines Great for flushing debris or clearing frozen pipes while attached to a sewer hose Backward ports in the nozzle blasts into the clogged pipe breaking up the debris along with pulling the hose through the pipe The nozzles are made of a corrosion resistant stainless steel Designed to be small enough to clean in all of the tight spaces