Masterspool ROSA3D is an ideal solution for anyone looking to reduce the number of empty spools left after the printing process. The set consists of two disks designed for multiple uses and easy assembly with ReFill filament packs available in the ROSA3D range. Assembly is straightforward: simply press the disks onto the ReFill (filament wound on a cardboard sleeve), remove the clamps from the filament ReFill, and then place the Masterspool + Refill set on the 3D printer like a standard spool.