The HP No. 05 Black LaserJet Toner Cartridge uses chemically-grown toner for finer, more uniform toner particles that ensure crisper detail and better colours and shades on the page. It also includes HP Smart Print for greener printing that uses less paper and toner. It's designed for the LaserJet CP6015, CM6030 and CM6040. This twin pack contains two cartridges, with a print yield of 2,300 pages per cartridge.