3D Pen Filament Refills, Kee Pang 1.75mm PLA Filament,Including 6 Glow in The Dark 689ft 1.75mm PLA Filament Pack for 3D PensxFF08;Pack of 21 Colors/32.8ft Each Color, Suitable for 3D Pen, 3D Printer

Full disclosure I am using this in an Ender 3 printer not, as I suspect is more the intent, a pen. It has printed fine but after sitting in the feed for a few minutes post print the filament snaps in the curve leading to the extruder. Quite odd. This limits my usage as the continues length keeps getting shorter and unlike a pen there in a minimum length required and some wastage already in a boden system. It could be that my batch was a little old and I am far from having tried every color at this point. I bought it as a way to accent prints with some contrast here and there.

Besides the language problem, the sample shades were difficult to discern some in some cases. Also, I wanted a 'true' green for a key chain sample - only two shades of lime green available. I did print a gold key chain which came out nicely. Large selection for the money.

Great value. Shipped quickly and product was as advertised.