Several of the marker tips were frayed. Colors are ...
580083
Several of the marker tips were frayed. Colors are vibrant. Gold marker is very hard to remove from chalk board
4728914
One marker arrived dried out. Two more dried out with minimal use within a week. Cant return because daughter threw away one of the markers that dried out. Amazon sending replacement set anyway. Will update after second set received
1870263
Markers worked great at first but ink did not last as long as the Sakura markers.  Also, the tips tended to fray much quicker which ruins making fine lines....Colors are pretty but disappointed that they did not last very long.
3832237
The Marker itself works fine, the chalk ink performs as advertised, but the tip and cap suck. The tips on these markers are not dense enough to last very long. Also, the cap has these ridge lines in it that pierce the tip of the marker, fraying it and shortening the life of it even more. If you plan on doing nice calligraphy or very fine lines with these markers you will be disappointed.
963722
While the function of this set is fine, the quality of finishing is not. The pins we got had marks on them and were unevenly painted.
4942927
Overall ok..  some pencils the colors broke as I sharpened them. ;(
3459154
Most of them were faded when used on paper so the quality is pretty poor which is too bad because my wife is a big fan of these kinds of markers.
1464789
Most of the markers are dried up, 1 doesn't fill the entire pen tip...just the outsides.
3660464
I needed the brown coloured pen to fill in dark spots on a shirt, but the marker was already too dried up. A few of the other markers were also dried up and unusable.
3357995
It looks to me like these markers were used.  They had differing amounts of ink in them and none was full.
920378
I was really excited to get these markers, by utterly disappointed when I used them. Within two uses these pens frayed. Not only that, but the colors dried out soon.
3591955
10 of the 12 markers were dry and couldn't be used. very dissapointed and will not purchase again. F for this product. could be the way amazon stored them or they could be old stock. Nevertheless, most did not work or last long.
3285320
The markers are very nice. The pen is not very good in my opinion. The markers work better on sketchbook paper than printer paper.
1559598
Good, but tip of the marker was not as fine as I thought it would be. They came out nice anyway.
3823494
I think if I remember correctly these were relatively cheap add-on item but there's a reason they are so cheap it seems. After just a few days of minor use the tips have already frayed and are no longer "fine tip" markers what so ever. They've become really hard to write with I'm probably going to have to buy new markers soon because my whiteboard calendar I use them on just doesn't have enough room for these thick markers. I'm pretty disappointed. I've included both a photo of the frayed tip as well as a comparison to the thickness of the writing of these markers to an actually fine-tipped marker for reference to illustrate just how thickly these write.
3140364
Most of the tips were not centered  and some of the clamp material came off with the glue.
3368152
The first package I got was broken, but they replaced it quickly so that part is fine. Some of the markers were also dried out in that broken package, but the new ones were good.
The ink is OK- not super vibrant but I have lots of color options which is what I wanted. The cap color doesn't quite match what is underneath. The ink does go on nice and doesn't bleed tooooo much through the paper.
My main issue is the outside of each marker- I bought these in February and after about 6 months the printing on the plastic of each marker is sticky and comes off on my skin as I color. 6 months in it was just a couple of them but now it's all of them. I have never before had this happen with markers. To use these I'm having to wrap a tissue around them to keep my hands from staining.

If you just want a cheap set of markers for the short term, these are fine, but I am currently shopping for a new set that will actually last me longer than a year.