Pilot Color Eno Mechanical Pencil Lead - 0.7 mm - Blue

I fear the day they may discontinue this product because I have relied on it so much.
Doesn't smudge, and despite what others say, erasing isn't really that bad with a quality eraser (though that might be because I don't really have a heavy hand).

Seriously my favorite lead ever.

Beautiful color, erases much better than a colored pencil.

The color is a beautiful sapphire blue, dense yet not very intense.

For those of us that use it for writing instead of for drawing: the writing looks gorgeous but it is a bit on the light side, prolonged reading could strain the eyes.

Without having tried more colored lead offerings, I don't know if I can reasonably ask for a darker lead. But I do wish the lines have more contrast from the paper.

About erasure:
[Note: I tried on line paper and photocopy paper, the following comments may not apply to other medium]
Pentel Hi-Polymer eraser (available on jetpens) erases writing and lines pretty well. If the line is done with so much pressure that leaves indent on paper, erasure will take a lot of pressure. Shading takes more effort to remove but compare to normal color pencil (I tried Stabilo Greencolors and Staedtler Noris Club) the trace is minimal.
Did not notice smudge.

I have all 8 colors of the Pilot Color Pencil leads. The only drawback is that when they erase they leave smudges.

Very nice. All my friends want to know where I got the blue lead. Very interesting and doesn't smudge! My only issue is that it doesn't erase too well, leaving traces. I wasn't surprised when I saw that this product was sold out when I went back to order more. Restock please!