Our CleverDelights 3.8cm round aluminium blanks are great for your stamping, engraving, and etching projects. They may also be used as ID badges, valve tags, or countless other uses. Some edges may require some light filing for maximum smoothness and to remove any mild burring. These are raw aluminium blanks and can be further finished for an even more professional look. Cheque out helpful youtube videos and other online articles on working with raw aluminium blanks for more useful tips and tricks.