1.75mm ABS 3D Pen Printer Filament Refills, 20 Colors, Each Color 3.5m, Total 70m ABS Sample Pack, Support for FDM 3D Printer 3D Pen, Not Suppor for 3Doodler Pen

Great variety of colors. They’re very bright. My seven-year-old grandson has no issues with the quality. He has a lot of fun with them.

I love the color variety! I use it with my pen and the spools are long enough to use for small projects in my printer too!! I love the ability to use these in the pen or printer to throw color where I need it and you can’t beat the verity!

Good quality, doesn’t stink, easy to use they are regular size.

The product is good, not the best and not the worst. We bought this with a 3D pen for our daughter and felt it was great for a beginner. They were able to make all kinds of little things

They fit perfectly in my son’s 3d pen. We have had no problems with moisture, clogging or tangles. He loves the color assortment and how easy they are to use in his pen.

This 3D pen works well. It is definitely better for older kids (at least 8+) and there is a knack for the timing of how fast the filament comes out and how fast (or slow) you "draw" with it. Definitely requires practice but is a good device for kids or adults. You can go through the filament pretty fast so be prepared to buy extra right out of the gate. For those who are not as "left brain" - I would also recommend getting a book of designs to work from. Nice, inexpensive gift and fun to use nonetheless.

Great price and great use

My granddaughter loved all the colors and she can’t wait to use them!

Creating objects with my 6 year old granddaughter