Interstate Pneumatics PW5300 Wet Industrial Sandblaster Kit For Pressure Washers. Why waste your precious time trying to remove tough stains,rust, multiple layers of paint, and graffiti by hand using harsh chemicals? Let Interstate Pneumatics sandblasting kit do your job. This amazing kit lets you convert your professional pressure washer into an industrial wet sandblaster. With wet sandblasting you can be assured of efficiency and cleanliness.