The cartridges fit easily to my printer Canon MG 5550 and were recognized immediately. When removing the protective film has not sprayed with me, as some write. Nevertheless, I would be cautious of this. The printed image is not as good as the original ink of Canon. That's plain to see, even in black and white printing of documents. I also use my printer at home professional, this is a small limitation for me. But I have expected. For the price-performance ratio definitely recommendable.