This item is a single Oki 44917602 black toner cartridge is compatible with a variety of Oki printers including the B431 mono laser printer. Every one of these Oki 44917602 cartridges offers an estimated page yield of 1,000 pages (at an average page coverage of 5%).The Oki 44917602 toner cartridge has been manufactured by Oki themselves to an exceptionally high standard. As such you can expect top quality prints from the moments the Oki 44917602is installed, with smooth gradients and distinct lines.Our laser printer cartridges are amongst the lowest priced on the Internet and carry a 100% satisfaction guarantee.Also included in the price is VAT and Delivery. What you see is what you pay!