Review on High-Quality Aztech Compatible Toner Cartridge Set for HP 410X CF410X 410A Color Pro M477fdw M477fnw M477fdn M452dn M452dw M452nw CF411X CF412X CF413X Printer (Includes Black, Cyan, Yellow, Magenta) - 4-Pack by Phillip Hoover

I've been using Aztech cartridges in my HP printers for a while. I've never had a problem with a cartridge - they just work and are as good as HP cartridges in terms of paper output. For the price, they're a great buy. On the packaging they appear to be X series cartridges but they are actually replacements for X series A cartridges and are series A cartridges themselves. For the print volume I do they last 1.5 to 2 years and are excellent offer for high quality toner cartridges for printing. I wouldn't hesitate to buy them again.