I ordered a full set of five cartridges for my TR8520. Easily installed in minutes. I printed some test photos and they look just as good as the original inks. Be careful not to pinch the sides of the carriages as this may cause ink to squirt out. I was surprised that you don't have to remove the tape before installing - it just makes installation easier. I ordered all trolleys in size XXL so I expect them to last a lot longer. Time will tell how long they last.
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