The da Vinci 3D printer uses easily interchangeable filament cartridges. These cartridges contain the filament spool with ABS and protect the material from external influences. Refill spools are available for these filament cartridges, which is environmentally friendly and more cost-effective. This original XYZprinting refill item consists of the filament spool including an NFC chip and must be inserted into an existing filament cartridge. Your da Vinci will notify you when the filament is running low.