The Black 522 Ink Refill Bottles Replacement for T522 3pack 140ml Each is a set of three large black ink bottles specifically designed for use with the Epson printers listed in the compatibility options. These bottles are compatible with models such as the Et-2800, Et-4800, and Et-2710 printers, providing a page yield of up to 27,000 pages. The ink is water-based and suitable for printing on A4-sized paper and other media. Ahewsue brand ensures quality and reliable performance for your printing needs.