This is a mount for 1" pegboard with 1/4" holes designed to hold up to 9 sharpies at once. As shown, this was designed to fit multiple mounts side-by-side so I could use it in conjunction with 3 packs of 12 sharpies.
It does require supports for the lower part of the pegs.
The author marked this model as their own original creation. Imported from Thingiverse.