The specially formulated nylon gun has seven orifice sizes with a tubular design for reduced overspray and greater texture variety. The knurled knobs let you adjust the orifice plate without wrenches and a tight-sealing flow shutoff prevents leakage. The gun also features a handy air control valve which allows flow control at the gun instead of at the pump. An easy pull swing trigger allows for greater control and less fatigue. You can use the adjustable trigger function to stop the flow for consistency of patter. With the angled hopper adapter design, you can keep it level while spraying floors and ceilings. The seamless 2-gallon hopper corners eliminate material build-up and reduces clogging.