Inktrack IR-40T Contents: 3 Pack (Black &Red) compatible with IR-40T Calculator Ink Roller Printer Ribbons. Each Ribbon is individually sealed in plastic. IR40T ribbon features specially formulated inks with custom lubricants, which can be absorbed evenly by ribbon and keep good humidity, to ensure the highest quality compatible ribbon for your machine. IR40T Black/Red Calculator Ink Roller Ribbons Come with two colors: Black for addition and Red for subtraction. Compatible Models: Work for Canon, Casio, Sharp, Victor, Texas printers. For More information please refer to the product picture. IR40T Ink Takes less than 30 seconds to install. Resists fading and makes your prints look sharp and vibrant.