Modular wrench holders in 5 sizes, with labels. 

I recommend printing one of each size and determining how many of each to print. Depending on your wrenches, they may fit differently but approximate sizes below:

S: 6-10mm, 1/4-3/8

M: 11-15mm, 7/16-9/16

Wide M: 16-17mm, 5/8-3/4

L: 18-20mm, 11/16-7/8

XL: 21-22mm, 15/16-1

Labels are included in a separate print profile as a multicolor and non multicolor option, as well as a blank label if you want to make your own. Labels are a loose fit and may need a drop of glue to hold in place if you are an aggressive drawer closer.

I was able to pint labels with classic wall generation but arachne will likely produce a cleaner text with the small font size.

Spacers are also included which can be attached to the ends of the holders or tucked behind them to help keep the holders from tucking under the lip that many toolboxes have which make it difficult to read labels.

Uses press fit 12X3mm round magnets to secure wrench to holder and to the bottom of the tool box.

Each piece interlocks using the press fit printed connectors. These may be slightly snug depending on the filament you use, I had no problem with Bambu matte PLA charcoal, but Bambu basic PLA red was slightly tight.

Update September 2025: Added 2 new sizes, spacers, adjusted some tolerances, added A1 Mini to print profile.