The Pitney Bowes AddressRight DA550E Mailing System Machine offers a dynamic postage delivery system, ideal for offices that send out mail on a frequent basis. Each Remanufactured and Genuine Pitney Bowes Inkjet Cartridge has a space saving design which easily installs, to reduce downtime normally spent on complicated replacement procedures. We carry the OEM / Genuine and Remanufactured HP 45 ink cartridges, known as the HP 51645A Black Inkjet Print Cartridge and the fast drying HP C6195A Black Ink Cartridge. We also carry the Remanufactured HP C8842A versatile black pigment fast dry ink cartridges and the Genuine HP C6168A Red Spot print cartridges, C6169A Green Spot print cartridges, C6170A Blue Spot print cartridges, and C6173A Yellow Spot print cartridges for your Pitney Bowes AddressRight da 550 e postage machine. We guarantee excellent postage handling capabilities with our HP print cartridges or we will refund your money within 90 days of purchase. And all of our Remanufactured and Genuine HP cartridges will last up to 2 years for definitive convenience and performance.