Designed to fit 3 standard profile cans. Removed the top of the cans just below the lip. Use a two part epoxy or super glue to hold the cans to the printed parts. The base has 8 pockets for 8mm x 2mm rare earth magnets for use on metal benches or tables. Press the magnets into place and super glue to retain. Files include the top and bottom printed parts, cans choices are up to you!