The cartridges I bought because of the low price and the good reviews. Unfortunately I only realized when introducing the first cartridge that at 2 (the color cyan always) the 10 cartridge clip was canceled, this therefore could no longer engage in the printhead bracket and thus were useless for me. Since than 1 month had passed after purchase, an exchange was no longer possible. However, the remaining cartridges are very good and OK in the color fastness. The level indicator works through the built-chip properly. I would always buy the cartridges again, but this check immediately after the delivery receipt for damage, so as to ensure an exchange within the one month period. Since in my view the goods were shipped already damaged, I forgive only 4 stars.