Harbor Freight Stubby Socket Tray

The hole diameter for 7/16-5/8 are 125/128 or 24.89mm

Hole Diameter for the 11/16 is 1-3/64 or 26.67mm

Hole Diameter for the ¾ is 1-15/128 or 28.45mm

Hole Diameter for the 13/16 is 1-13/64 or 30.48mm

Hole Diameter for 7/8 to 1-1/8 are all 1-7/32 or 30.99mm

Hopefully that will help you to know if this tray will fit the sockets you have.

As for print settings
Brim (I used anti warp tabs from a plugin just so the corners don't warp)
20% infill (any infill pattern you prefer)
3 walls
Thats what I used but ofcourse use whatever settings you feel appropriate.

I used PLA but can use whatever material you want for how tough you need or want it to be.

I would recommend having it print the numbers a little slower to ensure they come out well, its what I did just incase but your results may vary. 

Hope this brings some helpful organization to your tool box