Please look carefully at the trays to determine which tray fits ur needs the best. The multi tray, 3 slot, and open parts tray have pockets in the bottom of the tray for bar magnets which are not included.
These are the magnets I used and the link to Amazon.
30Pcs Rare Earth Magnets Bars, 25x5x3mm Small Strong Magnets Neodymium Magnets Rectangular Magnets for Crafts, Heavy Duty Magnet.
Tool and glue tray is setup for multiple rows of tools and drivers as well as spots for glues and hemostats.
The multi tray is designed 1 row of tools, and 2 pairs of hemostats as well as a few other slots tools and parts trays as well.
The 3 slot and open parts trays are just as pictured.