Cleaning rollers (sleeves) are held in place by a roller bar. Cleaning rollers will clean a card prior to printing to make sure it is debris-free for accurate image printing. It is recommended to change the cleaning roller every time you replace a printer ribbon for maximum printer functionality. Regular printer cleanings will ensure full printer functionality. Cleaning all parts of the printer will protect the print quality and extend the printer's lifespan. Compatible Printers: Enduro+, Rio Pro & Rio Pro Xtended