So overtime if you run filament out of a dryer box like a Sunlu one the filament holders on the CR-M4 my dad has started to get dug into by the filament from friction. Heres a spoolholder that will work for all creality printers that use one. I have tested my printers to make sure that it fits right and it passed my tests. Also I am currently using the printer that this replacement is on, So i will post printed photos later.