IR-40T, IR40T Black and Red Ink Roller x [3 Pack] Ribbon Cartridge Replacement Compatible with Canon P23-DH V, Casio HR-100TM, HR-150TM, Sharp EL-1750V, EL-1801V, Citizen CP-13 Calculator (3 Pack).

I almost returned this because it looked like it was all black. I accidently touched the "red" side, and the red ink came off on my finger. I installed this and it does in fact print in black AND red. The fact that the felt on the red side was also black was very misleading. This is a two color ink pad that works perfectly in my adding machine. You can't beat this for the price.

Not sure what took me so long to look for a replacement!

Good product

Arrived more or less on time with reasonable installation instructions and works as described. I'll be very pleased if it lasts as long as the first one, but I won't know that for a while.

I haven't been able to see the printed negative amounts on my calculator paper for a couple of years. The red ink went out soon after I purchased my calculator. The ink cartridge must have been old or defective. I am loving doing my bookwork now that all of the numbers show up and I wish I hadn't waited so long. I did try to find an ink cartridge in my area but all they could tell me was they could order one. I am sure it would have been more expensive to do that. Now I have a reserve supply and the low cost was appreciated.

I was ready to toss out my very old adding machine because I could no longer read the numbers on the printed tape. I couldn't see any way to change the ink rollers.......but as a last resort I found a YouTube video which showed how EASY it was to change the ink roller. I easily found the replacement part on Amazon and it was here in a couple of days. I changed the roller and now I can easily read the printed tape. and, as another bonus it made me eager to take on some accounting projects I had been putting off.

Works perfectly-packed well-shipped promptly

worked and fit correct