This is the Gridfinity Metric Hex Set from Husky 37-Piece 3/8 in Drive Bit Socket Set Part#1000029787.  I made these to fit in the shallow drawer of a Matco Tool box. 

Everything is designed around the standard Gridfinity system. The letters are all separate bodies so if you are using a multi-material capable printer such as the Bambu printers it is easy to select the letters for a different color.

I provided the fully sliced file for Bambu printers that has been printed using the X1C for testing.

The Fusion design file is also included if you wish to check sizes for your specific set before printing or for making changes.