Held back by the price in my purchase new original HP cartridges for my printer, I tested this system of remanufactured cartridges and I'm happy. They are indeed compatible even if I have a little force to install (this is why I put only 4 stars). Before, I threw in the trash my used cartridges frankly knowing what to do, but a special pre paid envelope is provided for the return of empty cartridges. If indeed we can fill a cartridge 8 times as written on the envelope, what a waste to throw them! This small delights me more, though the envelope with his cartridges do not fit into a regular mailbox, it's a shame, but we will do with. For life, for now I printed a dozen A4 sheets in a row and the quality seems identical to branded cartridges.
