Update May 2026 - I've just uploaded a few different lengths, these include:
55mm, 110mm, 220mm - (original length) and 275mm. See the new print profile for these. 
---End of update---

Designed to work with my other Tool Grid stuff

Includes 2 rails, one narrow one designed for smaller ¼" sockets and a wider one which is more suitable for 3/8" and ½" sockets. 
The holders will fit on either rail as the slot is the same size. 
If you want a custom length, just scale the model in that direction and it should work ok. I only have an A1 Mini so haven't been able to test it on the larger printers. 

Will work on my tool grid base plate using M4, 10mm screws. 

These are the ones I used:

[https://www.aliexpress.com/item/1005008141974255.html](https://www.aliexpress.com/item/1005008141974255.html)
Do not purchase longer screws as they will go through the board. 

Brief video of it here if you want to get a better idea of how it works: