My tool boxes aren't wide or deep enough to hold trays. One box is buy only holds one tray. Had I bought the wider box I could have got two in but the box I bought was on a black friday sale and with my additional discount was more then half off so it was a no brainer. I do have some socket organizers for shallow sockets and the deep ones end up rolling around. I still have to get some wrench organizers but they're usually over priced. So as long as my tools hit the right drawer going back in it's usually not a problem finding them.