Blake Printing Supply 4 Pack Ink Cartridges for 270, PGI-270, PGI-270XL 4 Big Black Compatible with: 270, PGI-270, PGI-270XL, PGI-270XLPGBK Backed by a 1-year manufacturer guarantee. Manufactured to high ISO9001 standards, and environmentally friendly ISO14001 standards. 4 Big Black Fantastic customer support provided