Be Green Ink Eco Series compatible LaserJet 4050se Toner is the best option for your HP 4050se printer because you can count on exceptional quality at an affordable price. Be Green Ink Eco Series compatible LaserJet 4050se Toner CE505X, CF280X Toner Jumbo High Yield 5 Pack Savings is made in an ISO 9001/14001 certified manufacturing facility and is tested prior to packaging to ensure that the print quality is the same as the original brand. Be confident knowing that when you purchase a BGI Eco Series compatible LaserJet 4050se Toner you are getting a very high quality compatible cartridge that will perform at the same level as an original cartridge, but at a fraction of the cost.