If you have been looking for better blacks in your printouts, then the T7011 black ink cartridge is definitely the solution. Each cartridge contains jet black ink to give you the darkest hues possible. The cartridge will definitely not disappoint you, since it has so many different applications. It can be used at home, for printing out short documents, or for school, if you need to print theses or books, or in the office. No matter what your purpose for the ink will be, the 77ml will definitely help you give out a constant stream of professional looking documents. The T7011 is compatible with the Epson WP-4000 Series, Epson WP-4015dn, Epson WP-4025DW, Epson WP-4500, Epson WP-4515DN, Epson WP-4020, Epson WP-4095dn, Epson WP-4525dnf, Epson WP-4530, Epson WP-4535dwf, Epson WP-454-, Epson WP-4545dtwf, Epson WP-4595DNF.