3 backward rotating spray blasts into the clogged pipe and moves the nozzle through the pipe. At the meantime, it provides an even cleaning and flushes out debris. Sewer jetting nozzle is easy to slide into sewer lines and drain pipes. perfect for flushing debris or cleaning fixed pipes when connect to a sewer jetter hose 1/4 inch Female NPT Fitting. Fits sewer jet hose with 1/4 inch male end. Orifice 4.5 Color: silver Made of stainless steel, corrosion resistant. Working pressure is up to 4000 PSI. Water temperate is up to 310 F. Small enough to clean in all of the tight spaces. Feature: 1. The sewer nozzle creates 3 backward rotating spray. 2. Working pressure is up to 4000PSI. 3. Orifice size is 4.5 . 4. The end of sewer nozzle is 1/4 inch female NPT thread. 5. Material: stainless steel 6. Working temperature is up to 310 F. Suitable for hot water. Application: Sewer jetting nozzle is easy to slide into sewer lines and drain pipes. perfect for flushing debris or cleaning fixed pipes when connect to a sewer jetter hose Tip: Serious injury will occur when spraying water to human body with high pressure. Please keep from human body. Package Contents: 1* Sewer Jetter Nozzle for Pressure Washer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.