I bought these pens for marking on a black slate. However, they are almost invisible and you have to press extremely hard, which leads to the tip breaking off every time...unfortunately not usable...
Bought in expectation of easily removable chalk on a slate. Extremely disappointed! Not usable!
Has nothing to do with chalk pencil. Unusable on any surface including slate. Must unfortunately be disposed of. Too bad
Rather unsuitable for my purposes, writing on blackboard film.
Chalk is different! The pen hardly gives off any "white", you can't see it. However, if you press a little, the pen leaves a permanent mark that doesn't go away even when you wash it off. I had to dispose of the pens because they didn't do what they were supposed to do in any way. And again, money thrown out of the window. Minus 3 stars!
A little thinner in the mines would be handy.
I cannot evaluate because I ordered this product on November 26 and have not yet received it
well
👍👍👍👍👍
Zero