The NXT Premium Replacement Ink Cartridges are remanufactured cartridges specifically designed for Epson Workforce Pro printers, including models 3820, 4820, 4830, 4833, and 4834. Available are 2 black, 2 yellow, 2 cyan, and 3 magenta cartridges. All of which are XL. All cartridges except two of the magentas are factory sealed. However, the two magentas that are not are completely unused. These cartridges came from an order placed through my vendor for my office printer. Unfortunately, they were the wrong ones and I just never got around to sending them back. If I'm able, of course, I'm happy to answer any questions you may have.