This is a black Pentel Orenz Nero mechanical pencil with an automatic lead advance mechanism. The lead size is 0.5mm. I'm selling it because I haven't been using it. As far as I can tell, there are no functional problems. The eraser is unused. There are no noticeable scratches, but please understand that this is a used item. It will be shipped without the box, just the pencil itself. Thank you.