This kit comes complete with dust mask, 6 braided hose and 6 ounces for fast cutting compound. The air eraser can be used anywhere an abrasive is required to delicately erase; such as decorative etching on glass. Can also be used by the professional technician, manufacturer, hobbyist or for dental lab work, erasing color, and removing rust. Requires a compressor 1/3 HP or larger that can deliver up to 70 PSI.