The Blastrac 1-8DEZMKII is a highly portable, lightweight shot blasting system used to prepare concrete surfaces prior to the application of paint or coatings and is perfect for smaller jobs such as residential garage floors, pool decks, and small industrial floors. Optimal blast-wheel RPM is achieved through a unique gear set in the motor. With a manual travel speed and 9 inch blast pattern, this small blast machine is also ideal for balconies, areas around equipment and obstructions, and other tight spaces.