110-volt maintenance kit ensures your Hewlett-Packard LaserJet 9000, 9040 & 9050 Series printer remains in working condition & continues providing the highest print quality possible. Kit includes user-replaceable parts that work with your HP printer to prompt you when they require maintenance: fuser assembly; pickup roller; transfer roller; feed / separation rollers; & installation guide. Approximate black / white page yield is 350,000 pages.