79WGD Water Jet Cleaning Gun Kit is ideal for cleaning farm and construction equipment, automobiles, trucks, or livestock. Delivers turbulent, high velocity, air/water stream for the toughest cleaning jobs. Equipped with air volume control and water shutoff valve, user can choose air/water for cleaning, water only for rinse, or air only for drying. Coupler allows multiple syphon options. Features 12" stainless steel extension for spraying hard-to-reach locations. Classic+ pistol-grip style handle provides maximum user comfort.