In addition to Hardwood Media and Treated Tumbling Media, there are many instances where untreated medias are used in dry tumbling. Medias like Walnut Shell Grit and Corn Cob Grit can be used for economical light polishing and drying of parts. More abrasive medias like Aluminum Oxide Grit can provide deburring and deflashing. The opportunities available using dry tumbling are nearly endless once the wide variety of General Tumbling Media are considered.