This material name plate is inspired by "Prusament PLA Meterial Label" of Dominik Cisar. The material name plate is convenience to discriminate diverse Prusament spools. One day, I found the remaining length guide inside of prusament spool. It is helpful for us. But it is difficult to look, when the guide is located back side of printer (black color is also). So I merge the material name and remaining length guide. 
Place this name plate to hexagonal holes of spool edge on blank plate of Prusament spool.
Keep in mind to clip the label into the right slots.

The .3mf and gcode files are made for 2 color printing. Just 2 layer printed out, you can change filament color.