This Casio IR40T NR42 Calculator ink roller is designed for casio printing calculators. The ink roller allows for 2 colour printing positive values are shown in black and negative values are shown in red for easy checking.
Black and red calculator ink roller
Replacement For: P1DH, P10DH, P40DHII, P1DTS, P1DTSII and P1DTSV
Keep an extra ribbon or two in stock so when you run out of ribbon