We're talking today about hand sprayers, compression hand sprayers that are used to apply to all kinds of liquid sprays to all kinds of surfaces. This particular one come in a box and has all the necessary parts for quick assembly. It's a handle to carry the unit with, the tank and this is a pump assembly that actually compresses air. You pump it, it pumps air into the tank and it has no place to go so it produces pressure which allows you to spray the liquid by pressure through the wand. This is a cut off valve which cuts the sprayer on and off and this is the wand which has a spray tip on the end of it. All these parts come together once you get an assembly done you are ready to go spray.