This is a remanufactured replacement for the Hewlett Packard Q3964A (HP 122A) laser drum unit. It is designed to perform reliably with your HP printer and serves as an economical alternative to the original HP drum cartridge. The remanufactured Q3964A drum cartridge is made using both OEM and non-OEM parts, ensuring quality and reliability. The use of this remanufactured drum cartridge does not void your printer's warranty. Backed by our 100% Satisfaction Guarantee.