Review on 💡 Porelon 11204 PR42 Calculator Ink Rolls, 2-Pack,Black/red: Efficient Ink Replacement Rolls for PR42 Calculators by Andrew Britton

I have a Canon P170-DH which they are compatible with. I bought a twin pack and the first reel I put in didn't let the number wheels work freely. After using it once, the carriage could not return home correctly, so red/black would not be correct and the characters on the right would be confused. The second reel works perfectly. I wouldn't buy them again.