Stabilo Bionic Worker Roller Ball Pen - 0.5 mm - Black Ink

i really enjoy writing with the stabilo bionics. The ink doesn't come out totally solid like most liquid ink pens, and that's nice. There's real character in how the ink trails.

The handle is also very comfortable to hold, and the protruding dot on the barrel prevents the pen from rolling off uneven surfaces.

The pen also looks so damn good. The rubber body also feels so damn good.

I recommend.

I really like the feel of this pen. I enjoy rubber bodied pens greatly. This is a very well designed pen and it feels very good in the hand. The ink is dark and there is very little resistance across the page as you write. I will agree with other reviews I've read. This may be advertised as a 0.5 mm but the line is much wider. Compared to say the Zebra Sarasa I'd say the line width is between the 0.7 and 1.0 mm sizes. But I prefer bolder lines so this isn't an issue. Just don't buy this expecting a fine line. The other big issue is that for such a nice pen this is NOT refillable via any means. In this day an age, and for the price this is a bit no-no! I wish Stabilo would make one of these refillable and retractable. This would be awesome.

I purchased both the Bionic Worker and the Worker Colorful in 0.5mm with black ink and I honestly can't find any difference between them. I usually don't like rollerball-style pens, but I love these. The ink is incredibly smooth and nice solid black. The rubberized body of both pens feels nice in my hand. The length and body width of the pens are very comfortable to hold, but lightweight so your hand won't get tired. I would compare the overall style and feel of these two to a Schneider Slider Memo XB (my favorite pens of all time!), though these are slightly shorter.

0.5 writes like 1.0 or higher.

I should have paid attention to the reviews. While this pen does write nice, the line is way thicker than 0.5. I bought 5 other pens that were 0.5 and this one writes even thicker than some of my 1.0 pens.

So, be aware and buy smaller than you normally would if you're concerned about line weight.

Feels lovely to write with - perfectly smooth roller ball and doesn't "catch" when writing quickly like some other pens. The pen body is well-balanced, interesting to look at, and generally feels good in the hand. Quite a shame that it can't be refilled, but it should be a pleasure to use while it lasts. I would also prefer a visible ink window, personally.