Holder for 3/8" Metric sockets.  I based this on my Craftsman set that has 6pt and 12pt sockets, with a separate holder for each.  My 12pt set does not have 20mm or 22mm sockets, so I filled the holes to keep the holders a uniform length.  I had to split the model to fit the print bed.  The split falls between two sockets so you can remove one half of the holder from your toolbox when you are working on a project without losing any sockets.  I am open to making other variants upon request.  Gridfinity compatible, 2U (W) x 9U (L) x 3U (H).  I also created an SAE version if you need it.

My design specifications:

• All holders are 3U deep for a uniform look.
• Must pass a drawer SLAM test.  (I use my tools, not just look at them.)
• Left to right layout with smaller sockets in the front.
• Clear label for the entire set in the upper left corner.
• 0.8mm hole clearance around all sockets for easy insert/removal.
• 1.5mm border around all holders.
• Clear labels that are 0.4mm nozzle compatible.  Font is Arial Narrow, bold, 5mm tall if you want to make something to match. 
• Beveled/filleted edges to make sockets easier to insert.
• Include holes for 2mmx6mm magnets, but I personally don't see the need.
• Part of my socket holder collection: [https://makerworld.com/en/collections/7481883-robnordic-s-socket-holders](https://makerworld.com/en/collections/7481883-robnordic-s-socket-holders)

Happy Organizing!