Brother tn421c cyan toner cartridge genuine brother toner cartridges are designed specifically to work with our laser system design each component of a brother laser product is designed to work with the other this cartridge yields up to 1 800 pages and works with hl l8260cdw hl l8360cdw dcp l8410cdw mfc l8690cdw mfc l8900cdw specifications approximate yield 1 800 pages colour cyan manufacturer brother pack size 1 pack