The mark consists of the three-dimensional configuration of an apparatus for power washing consisting of five portions creating a distinctive design. The first portion is a nozzle cap forming the uppermost portion of the variable nozzle. This cap features a series of evenly spaced, vertical ridges extending from its base to near the top, providing a textured grip surface. The cap tapers slightly towards the top, culminating in a flat surface with a central circular aperture. The second portion, directly below the nozzle cap, is a nut that encircles the nozzle body. The third portion is the nozzle body which extends downward from the adjustment collar and comprises the main body of the apparatus composed of a metal body with a consistent diameter. The fourth portion is a connecting fitting located at the base of the nozzle body and consists of a metal connection plug with a circumferential groove near its end. The fifth and final portion is the chemical injection portion which protrudes laterally from the junction between the nozzle body and the quick-connect fitting is a short, hose barb fitting. This fitting is oriented perpendicular to the main axis of the nozzle. The overall configuration of the nozzle presents a stepped cylindrical profile, transitioning from the wider nozzle cap to the narrower adjustment collar and nozzle body, and finally to the quick-connect fitting. The combination of the textured nozzle cap, hexagonal adjustment collar, smooth cylindrical body, and lateral chemical injection port contributes to the distinctive appearance of the trade dress.