Pelikan C36c37 cartridges Double Pack (compatible with Canon PGI-520BK CLI-521BK, 2 x 9 ml) black (Office supplies & stationery)
Again and again well recommended again. This company has long been my favorite in-product segment when it comes to alternative cartridges. For years in Canons used and never had a problem. But be careful when Brother inks, as you should also take Bro