Risograph Brand Ra4000 2- STANDARD YIELD BLACK INKS-S569 S569 (2 IN A BOX) BLACK INK CARTRIDGE RA4000/RA4900/RA5600/RA4200/RA4500/RA5800/RA5900/RC5600/RC5800/RC5900/RC6300 BRAND NEW ORIGINAL (OEM) 10,000 PAGE YIELD