The NCR ATM 6638 is a compact, self serve ATM machine ideal for bank branches or other indoor locations. Using our Remanufactured HP ink cartridges with your NCR 6638-ATM machine will create bright and legibly detailed bill payment printouts, couponing, vouchers, and mini-statements. We carry the OEM / Genuine and Remanufactured HP C6602A Black Inkjet cartridges, the HP C6602B Blue Inkjet cartridges, the HP C6602G Green Inkjet cartridge, and the HP C6602R Red Inkjet cartridges which have been designed to easily fit into your NCR atm6638 cash register machine. We guarantee excellent printing quality with our Genuine and Remanufactured HP Inkjet cartridges for your NCR cash register or we will refund your money within 90 days of purchase. And all of our NCR supplies will last up to 2 years for definitive convenience and performance.