(4 pack) Calculator Ink Rollers, IR-40T/Canon CP13/NU-KOTE NR42/NR422 for Various Sharp, VICTOR, ADLER-ROYAL, CANON, CASIO, AURORA, CITIZEN, OLIVETTI, TEXAS INSTRUMENTS Calculators IR40T, balck & Red Replaces IR-40T / Canon CP13 / NU-KOTE NR42 Compatible with many SHARP, VICTOR, ADLER-ROYAL, CANON, CASIO, AURORA, CITIZEN, OLIVETTI, TEXAS INSTRUMENTS Calculators Popular models include Casio HR-100TM, Casio HR-150TM, Canon P23-DH V, Sharp EL-1750V, Sharp EL-1801V, Texas Instruments 5045 SV