The one-piece FJ Penetrator stainless steel cleaning nozzle from USB - Sewer Equipment Corporation is neither bonded nor screwed together, enhancing strength and reducing chances of failure under pressure. Its 3-D Hydro Mechanics, located in the lower part of the chamber, eliminate pressure in the upper portion of the nozzle and prevent explosion. The water coming from a pressurized hose is immediately guided directly into channels and smoothly into a one-piece ceramic nozzle insert, which does not require winglets or flow-straighteners because of the hydromechanics in and out of the chamber. It is ideal to remove sand, mud, silt, grease and obstructions from sewer and stormwater lines. 866/408-2814; www.usbsec.com.