Markal Pro-Ex Extruded Clay Based Crayon, 1/2" Hex, 4-5/8" Length, Blue (Pack of 12)

No good. Cancerous. Stay away from this thing. I’ve used other lumber crayons before and didn’t have this potential to pretty much kill you. And to top it off, the thing marks more like charcoal than a crayon. After you make a mark it’ll smear if you run a finger over it just like when you draw with artist’s charcoal, which I guess isn’t a bad thing if that’s the effect you’re looking for, but if you’re looking for more of a waxy, crayon like mark, then it’s a big disappointment. I’m very unhappy with this product and have already returned it. Stay away.

i do a lot of layout work and need a crayon to last unlike the cheap ones you can mark even when wet

They write very well on wood. I've had several break though, before I got a holder for them. Once I put one in the holder, it's not broken yet. So, overall these are a good product.

They're not for graffiti art like the regular markal b markers

Works great, love the color. My only complaint is that the papers are really hard to remove

Horrible product! It does not write darkly on wood (or anything else). I use crayons to mark lumber every day, and these are one of the worst crayons that I have used. I have purchased their black crayons, and they work fairly well, but these are no good.

Not really a crayon, its a graphite stick.

Awesome

I bought at promo price . Give me more!!! 100 boxes should do