Canon (E31) (E40) PC 921 Toner OEM# 1491A002AA 4000 Yield - Premium compatible toner High quality toner. Manufactured in the USA (California) from virgin OEM cores 4000 Yield. 100% compatible with Canon PC 921 Black 7.50x4.75x13.25 High quality Compatible Toner with 1 year manufacturer warranty.