Calculator IR40T Red And Black Ink Roller IR40TReplenish your printing calculator with a fresh ink roller with a long lasting, tear resistant ribbon for consistent and reliable results. This high quality print roller is suitable for installation in a wide range of calculators, including models from Aurora, Canon, Casio, Ibico, Citizen and Sharp. The twin roller design provides black and red ink for positive and negative number operations. BPA free Replacement print ribbon Designed for a wide range