Small, swift, efficient. With extensive knowledge of blasting technology, Marco® has re-engineered these portable blast machines for ease of use and consistent performance.  The Blastmaster® 153 remote control valve is a pressure release system which allows for filling of the blast machine when the handle is released. Designed for quick loading, the concave top with triangle handle helps to fill and pressurize the machine. The integrator mixing valve lets you command the proper blend of air and abrasives. Perfect for all size jobs.  Made in the U.S.A.