OEM Genuine Copystar 37077015 black copier toner cartridges-2/CARTON for the Copystar CS-2018, CS2018,Copystar CS-2121, CS2121 laser toner copiers. page yield 7,000. What is an OEM? OEM is Original Equipment Manufacturer. Copystar OEM 37077015 Black Toner Cartridge manufactured by Copystar and is completely brand new. Your Original laser toner cartridge is manufactured to the highest quality as well as the best performance. When buying OEM products, you can rest assure that your printing will have maximum quality. The cost of OEM inkjet cartridges is overall more expensive, but the print quality is better and long lasting. Think Toner offers all laser toners at our everyday low prices. You will be satisfied with the print quality and longevity this OEM Copystar 89846 Black Laser Toner Cartridge