This is a socket organizer for 3/8 sockets. Specifically I modeled this after the Gearwrench socket set. It may work for other brands, but it seems each manufacturer has slightly different dimensions. You may want to do a test print of the very top few layers and see if it will fit your sockets.

Gearwrench metric and SAE socket set

[https://www.amazon.com/dp/B009PJPH28?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1](https://www.amazon.com/dp/B009PJPH28?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1)

Updated! By user request, I added a print profile to include a version to fit the Harbor Freight Quinn 3/8 set (¼ through 7/8) 

Additionally I uploaded the Fusion 360 (f3d) I made for this. It is a fully parametric design so you can just adjust the parameters and edit the text objects. The spacing will auto adjust.