Nu-kote Model NR-42-2 Ink Rollers, Pack Of 2 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