Original Printing colours: Black Black toner page yield: 11000 pages Laser printing Lexmark Return Program Cartridges are sold at a discount versus the prices of regular cartridges in exchange for the customers agreement to use the cartridge only once and return it only to Lexmark for recycling. Regular cartridges without this license/agreement sold at regular prices are also available. Regular cartridges are also recyclable at no cost through Lexmark Cartridge Collection Program. For use with Lexmark E450 Printers.True: Accurate technology. Genuine quality. Environmental focus. It's our nature.Image: Crisp print. Professional documents. Great Impressions. Project your character.Always: Dependable. Page after page. Year after year. Count on Lexmark. Features Black toner page yield 11000 pages Printing colours Black Type Original Weight & dimensions Dimensions (WxDxH) 184 x 415 x 128 mm Packaging data Package weight 1.31 kg Other features Print technology Laser printing Colour No Logis