Compatible Replacements Included: 1 W8D60 331-8429 Dell Black Toner Compatible Printers: Dell Color Laser C3760dn, Dell C3760n, Dell C3765dnf Print the same number of pages as the original Dell C3760 / C3765DNF/ C3760dn compatible toner cartridges Page Yield*: 20,000 Average cartridge Page Yield* in accordance with ISO-19752. *at 5% coverage (ISO/IEC standard) These are the Extra Higher Yield Version of: 331-8425 & 331-8421 Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.