They could be used for cleaning the soft sewer blocked of oil blocks, fine sand, fine gravel blocks, drain cleaning, industrial pipe, general sewer, washing machine, wash basin, toilet, and general waste obstruction etc. The sewer spray nozzle could be connected to a 1/4 quick connector, make the water more , easy to match and install. your drain pipe blockage problem easily. You could remove the pressure washer Jetter nozzle from the jetter by using 1/4 quick matched in our package. You could adjust the pressure to it in the French drain corrugated plastic tubing safely. It could used in 5000 PSI/ 4500 PSI/4000 PSI / 3700 PSI pressure washer.The higher your washer psi the better results you'll get out of cleaning your drain and sewage lines. It could generate enough thrust to go vertically up a downspout. Assume you refer to a roof gutter spout. It would "climb" the spout though you may have to either remove the angled fitting at the or assist the movement of the jetter hose around the inner edge of the bottom fitting. the water supply rate is at the required level. Since the nozzle and hose would be working vertically, you would not have the Advantage of a flooded "pipe" usually eases the movement of the hose along the pipe. Gravity will force all liquids and solids to to the ground. If drain pipes are open at bottom, then push . If pipes are connected to storm sewer then push debris up. You could remove the old quick release by wrenches. If failed, it means your quick release is glued. Hose Nozzle Size: 58 x 17mm,Not work with garden hose. Quick Connector Size: 31mm, 1/4 inch quick to 1/4 inch female, fits 1/4 inch quick nozzles. Material: Stainless Steel + Brass colour: Silver + Gold Package Contents: 1x sewer nozzle 1 x Brass Quick Connector Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.