These models are for the Tactix 320001. If you are looking for a parts container and live in the US, I have found the best place to purchase Tactix parts containers is Home Depot. These and other models are generally available for 30% less than most other sources. I got mine for $10.90 from the home depot website.

bit.ly/tactix-320001

There are 4 different models each with different spacing configuration, and the fusion and step files are included to make your own.

These are intended to replace the dividers that come with the case. The models fit tightly and will not move within the intended spacing, but can be inserted and removed without difficulty.

If you have questions please let me know.