Hewlett Packard C4127A, HP 27A Black Laser Toner, Original HP - LD Products
HP 4000 4050 - c4127x - New compatible Toner Cartridge -
Amazon.com: MICR Toner International Compatible Magnetic Ink Cartridge Replacement for HP 27X C4127X Laser Printers 4000 4050 : Office Products
HP 27X (C4127X) Black, High Yield Toner Cartridge Replacement for HP LaserJet 4000, HP LaserJet 4050 by Printel | Price: $27.99 | Cartridge Products | Partsmart
HP LaserJet C4127X 4000 4000n 4000se 4050 Compatible Toner Cartridge | Toner Refill Store