The original Hewlett Packard C9704A / HP 121A drum unit is professionally designed to produce the highest quality printouts for your Hewlett Packard laser printer. The brand new, original C9704A is an ideal choice drum cartridge for your Hewlett Packard printer. HP 121A drums deliver excellent, dependable results, page after page. You can depend on HP 121A laser drum units. 100% Satisfaction Guarantee.