HI-VISION [New Chip] Compatible HP 934XL HIGH YIELD Black Ink Cartridge for HP Officejet 6820, 6830, 6835, 6230, 6815, 6812 (2 Pack) TYPE: Brand New Compatible High Performance and Quality Ensured Premium Quality Cartridge is made by ISO9001 Certified Factory to Meet OEM Standards 180 days Money Back Guarantee and 1 Year warranty replacement Against Product Defect INCLUDING Amazon Prime orders Black: Up to 1,000 Pages at 5% Coverage