Compact Allen Wrench Bracket Holder Rack for 2020 extrusion or wall-mount (FLSun 1.5, 2, 2.5, 3, and 4mm)

Here is an allen wrench rack for the set of wrenches I need to keep handy to service my 3d printer; 1.5mm, 2mm, 2.5mm, 3mm, and 4mm. It's designed to be mounted to the side of a horizontal 2020 extrusion, or any vertical surface really, with up to 4mm fasteners (with a head diameter of around 6mm or less).

If You make it, please post it!