Tool Peg with a 2 degree angle, mounted with 2 screws. 

I haven't really tested the strength of it, but it should be enough to mount a couple metric wrenches on it at once. peg is roughly 30 to 40 mm long.

Infill I used was around 50 to 70, so a single piece takes 45 to 75 min. 

If you would like to, go ahead and revise, the gaps between each peg could probably 5 to 10mm shorter if you are tight on space.

Fit-wise side-to-side, there is a bit of play, design was given 1 mm of leeway between pieces. so it would easily fit.

Countersunk hole seems to fit a #6 or #8.

Novice at making these things, and this was made with Tinkercad.

If this happens to be similar to another persons creation. Sorry, wasn't on purpose.