Double Bin container for the “ToughBuilt Compact Low-Profile Plastic Small Parts Organizer (TB-B1-O-10C)”. This should also work for the wider low-profile organizer, but since I don't own one I'm unable to test.

There is also a Gridfinity insert (6U height bins) for the Double Bin so that you can organize smaller parts, or quickly take the parts you need at the time from your extensive bin collection. The 2x4 Gridfinity Cover is used to help contain the items when moving around with your compact organizer. As the inside of the clear cover has some protrusions that stop the bins from sitting flush when closed.

The Double Bin and Gridfinity Insert are meant to be a “tight” fit so that they don't come apart easily and also so the bin itself doesn't move around inside the organizer.

NOTE: These bins only work on the forward 2 compartments; as the back area has a small protrusion used for the StackTech connection mechanism. I may release one for this back area, but it won't work very well with the Gridfinity Insert.