Use Horizontal expansion -0.1, if you want the smaller allen keys to fit perfectly.

Tool holder for v2 cr10 printers upper right Z.

Mount/secure:
2x2mm walls that goes over/on z rod mount, this fits really well.
To make it very stable it is a hole for a m5 into the frame on printer (that is perfect located).

Holds:
Plier
Caliper
Copper brush
3x Nozzle
-And all tools that comes with cr10 v2

If you printing really big ..
Scraper hit extruder after Z 370 and X 260.
Its just the scraper at this height .. otherwise its fine.