Festool 499901 SYS-Storage Systainer Working with a system and keeping everything organized and easily accessible helps you to work more efficiently Four compartments and five included containers adapt to your organization needs See-through, flush-mounted cover panels facilitate quick searches while keeping everything in its place no matter where you go Integrates fully with all Sustainers, Sustainers and Toolboxes, the SYS-Storage unit not only stores what you need, but goes where the work is The horizontal folding layout helps to prevent small pieces from migrating inside even if you drop it