Air Eraser Kit Operates like a small sand blaster capable of a great deal of accuracy. Used in a wide range of industry as well as glass etching and to smooth castings. Operates on pressure ranges from 30-45 PSI. Sold with hardened stainless steel tip, cup assembly cover, hanger, wrench, one jar of AEX-6 Fast Cutting compound, 4 ft. air hose with moisture trap and 5 disposable respirators in box.