These are my favorite brand of colored leads for mechanical pencils (not that
there's a whole lot to choose from!) I like them slightly better then the
Uniball leads, although those are really high quality as well. These erase
slightly better than the Uniball ones. The lead is really soft, so the only
downside is you go through them really fast. But I prefer softer leads anyway so
I'm used to it and it's not a big deal, they're well worth it!
These leads are fantastic. The comments about not being able to erase are untrue
IF you choose the proper eraser to use. The stock eraser on the Eno pencils
doesn't work, but the Factis black 80 hand eraser does the job well. These leads
give a good solid line with rich color and an easy, soft feel. I wish they came
in 0.9 mm as well, but I haven't found that yet.
I love the lead colors in this product line--they're bright and saturated. I use
them a lot for my underdrawings, especially because they erase well. On the
downside, I use a heavy hand when sketching, so the soft lead snaps quite often
:s I'll either have to invest in more of these refill packs or use a softer
touch when drawing with this lead...