This air brush kit can erase a fine line or work over a wide area. Works like magic to erase defects in jewelry castings, clean fine instrument parts, remove dust, tarnish and other corroded accumulations on a wide variety of delicate objects. Kit comes complete with an Air Eraser; 4' (1.2 m) air hose with moisture trap, dust respirator, 6 oz. (170 g) jar aluminum oxide compound and A-34 hanger. .