Compatible Ink Roller/Ribbon MP-49DII is a practical replacement supply for compatible printing calculators used in offices, schools and accounting workstations. Heavy duty, high-speed ink ribbon printer (dual colour, 4.8 lines-per-second). 14 digits. Large Fluorescent Tube display. Profit margin calculation. Currency Conversion. It helps keep printed calculations, invoices, audit trails and daily totals clear without replacing the machine. A useful choice for Canadian businesses, school offices and home offices that keep calculator consumables on hand for uninterrupted work.