The machine is equipped with a main roller conveyor that permit the entrance/exit of the parts into/outo the blasting chamber. The nozzles are driven by a 2-axis gantry arm that permit to follow the piece profille. The number of nozzle is defined according the production rate and the complexity of the piece geometry. This machine is usefully for manual loading/unloading operation but it can be also equipped with an automatic handling devices according the process line request (walking beam, roller conveyors…). Both injection and pressure technology can be installed on such equipment. This machine is used for surface preparation, surface cleaning and shot-peening.