Paint sprayer, great for painting surfaces with corners you can't go around. For example, for painting walls under ceilings and other places in construction. The atomizer has a rotating wheel that prevents the paint from spraying beyond the designated boundaries. Thus, you get an even, outlined line and a neatly painted surface without the need to touch up imperfections. The body is made of tungsten steel, so the sprayer weighs 444 grams. The sprayer fits 7/8" air guns.