Laser Tek Services&reg; Compatible Replacement 4 Pack 44992405 Toner Cartridges for the B401, B401D, B401DN, MB441, MB451Q,MB451 Package contains 4 Black 44992405 (B401) Compatible Replacement toner cartridges For use in the following printer models: Okidata MB451Q, MB451, B401, B401D, B401DN, MB441 Page Yield: 1,500 pages @ 5% page coverage. Product Comes with a 1 year 100% Satisfaction Guarantee! Laser Tek Services offers free technical support for any questions you may have. Manufactured by ISO and STMC certified facility.| The Use of Laser Tek Services compatible products will not void your printers warranty.