Surface finishing is a process that treats the surface of a work piece using compressed air to create a high-speed jet that propels abrasives (such as white fused alumina, brown fused alumina, garnet, glass beads, etc.) At high speed onto the work piece. This changes the surface's appearance or shape. The impact and cutting action of the abrasive on the work piece surface results in a certain level of cleanliness and varying roughness, enhancing the mechanical properties of the surface.