Our shellers also clean your product,by using a pneumaic seperator device attached to a blower. Because the shell or hull is lighter than the meat ,by adjusting the power of the air flow through the peumatic seperator the hull is blown out the hull spout and the meats fall out the side spout up to 98% clean. Note the rotary damper in the picture. By rrototing it to the left it opens the intake of the blower and thus the blower blows harder and therefore removes more shell. Turning it to the right closes it and has the opposite effect.