They can be used for cleaning soft sewer blockages caused by oil, fine sand, fine gravel, drain lines, industrial pipes, general sewers, washing machines, wash basins, toilets, and general waste obstructions. The sewer spray nozzle connects to a 1/4 inch quick connector, enhancing water pressure for more effective cleaning. It is easy to install and helps resolve drain pipe blockage issues. The pressure washer jetter nozzle can be detached from the jetter using the 1/4 inch quick connect included in the package. The nozzle is compatible with pressure washers rated at 5000 PSI, 4500 PSI, 4000 PSI, and 3700 PSI. Higher PSI ratings provide better cleaning performance for drain and sewage lines. It generates sufficient thrust to travel vertically up a downspout. When used in a roof gutter downspout, the nozzle may require the removal of the angled fitting at the base or manual assistance to guide the jetter hose around the inner edge of the bottom fitting. Ensure the water supply flow rate meets the required level. Since the nozzle and hose operate vertically, they do not benefit from a flooded pipe, which typically aids hose movement. Gravity causes liquids and solids to fall downward. If drain pipes are open at the bottom, debris is pushed down. If connected to a storm sewer, debris is pushed upward. The old quick release can be removed using wrenches. If removal fails, the quick release may be glued in place. Hose Nozzle Size: 58 x 17mm. Not compatible with garden hoses. Quick Connector Size: 31mm, 1/4 inch male quick connect to 1/4 inch female, fits standard 1/4 inch quick connect nozzles. Material: Stainless Steel + Brass Color: Silver + Gold Package Contents: 1 x Sewer Nozzle 1 x Brass Quick Connector Only the items listed above are included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.