I have now ordered the filter cartridges for the 2nd time for my Krups EA9000 and am completely satisfied. Hold just as long as the original cartridges from Krups, but cost only a fraction of this. The tightening in the water tank is just as possible as in the original cartridges with the insertion aid provided by Krups. This works fine with me. All in all, I recommend the cartridges each. They are an affordable alternative to the original products and fulfill the same purpose. I'll order these cartridges in any case further.