u/Jdan-S

From top: Zen pens in earth, smoke, and midnight, and Mono Metal pens in black and white. I got the black Mono Metal as a gift, and I got interested in the other pens afterwards.

These seem to be available only locally where I am. For how they look and feel, they're surprisingly affordable at around $1 each for the Zen pens and $1.50 for the Mono Metal pens. They have plastic and metal parts (meant for engraving), plus a bamboo tip for the Zen pens. They all come with what writes like a 0.7/1.0 point, but refills are readily available, and I put in 0.38 in most of these.

I already had a gray Tikky Retro in 0.5, so I was undecided whether to get another to match or in a different color for distinction. Ended up buying both to try this out. I had some old blue Pilot Color Eno lead (sealed from years ago), and this seems like a good way to finally put it to use.