Over the Top Wash Unit provides the best in safety by eliminating dragging hoses from tangling around the horse or their feet. This keeps the hose high above the horse's head, which makes it easy to move quickly and quietly. Measurements are 1" inside diameter, 1 1/4" outside diameter with powder coated tubular steel. The boom rotates and extends out from 4' 2" to 8'. Comes with steel boom system, 25' 3/4" garden hose, and spray nozzle.