FIROS3D Pen Filament Refills, 32 Colors 3D Pen PLA Filament, Each Color 9.84 Feet, Total 315 feet 3D Printing Pen PLA Filament, Compatible with SCRIB3D MYNT3D 3D Pen, Not Suitable for 3Doodler

This is a great product for the 3-D pen that I purchased!

Filament is 1.75mm and works in my pen and I've even used a few colors for printing on a small 3D printer.

Perfect for my 3D pen. Nice selection in manageable lengths. Some kind of storage box would have been a big plus.

Picked this up for my daughter's 3D Printing Pen. The color selection is nice and the filament works just as well as my standard 3D printer spools. I did notice that the white color seems to be harder to load than others. Seemed like the extruder skipped a bit, but no idea why. Once loaded everything was fine. Overall, very happy with this set.

Bought this pack hoping it would work on a 3d printer as opposed to a pen as I was running low on filament and kind of wanted to see how the colors looked but they don't like the speeds that my printer can print at so most prints failed badly. So for those looking at this for a 3d printer and not a 3d pen, look elsewhere.

This filament has worked without problem in my scrib3d 3d pen. It feeds well without clogging and adheres as expected. A nice variety of colors is included and my kids and I are getting great use out of it. Great buy!

This worked great with my sons 3d pen. He loves making different creations. The quality is great and it fed into the pen well and was easy to set up. The filament was thick and everything he made held up well. I’m happy with the variety of colors too.

I have somehow misplaced my 3D pen so I can't show picts of new stuff I want to create but I can say the quality of this filament is pretty good. The colors are great, lots of variety and it's pretty consistent in size and how it flows through the pen.