Bought a new pencil today, for my kanji studies. One of the weaknesses of ordinary mechanical pencils, is that the point of the lead flattens on one side as you write, so you have to turn the pencil all the time yourself. This results in lines of uneven thickness.This pencil is relatively new, and is special in that it constantly turns the lead as you write, meaning you always get a sharp point, and thus lines of even thickness. It's available in both 0.5mm and 0.3mm thicknesses, and I went for the thinner one, as it enables me to write smaller kanji. So far, it seems to work very well, and I'm not disappointed at having spent the best part of ¥500 (£4) on it.