where are they manufactured?

There is nothing listed on the package to indicate where it is manufactured.

Is the hr-100tm ink roller compatible with casio hr-170rc model ?

I have a Casio HR 100TM, don't know if the ink roller will also fit the HR 170rc model

How long does a cartridge last typically?

It greatly depends on usage and it is very subjective as to when the print is "light" but I would estimate a few months on average is a fair estimate for medium use.

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🖤🔴 Ink your success with every calculation!

BULK PACK EFFICIENCY - Six sealed cartridges ensure you’re always stocked and ready to calculate without interruption.
SEAMLESS COMPATIBILITY - Designed to fit multiple Casio models including HR-100TM, HR-150TM, and more—no guesswork needed.
VIBRANT DUAL COLOR INK - Switch effortlessly between black and red for clear, professional printouts.
HASSLE FREE REPLACEMENT - Easy to install cartridges that keep your calculator running smoothly and looking sharp.
PREMIUM QUALITY ASSURANCE - Manufactured by CTR in the USA, guaranteeing reliable, smudge-free printing every time.

This 6-pack of COMPUMATIC IR-40T ink rollers offers dual black and red ink cartridges compatible with a wide range of Casio printing calculators, including HR-100TM and HR-150TM models. Individually sealed for freshness and manufactured in the USA by CTR, these rollers ensure crisp, reliable printouts and hassle-free replacements to keep your workflow uninterrupted.

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Manufacturer	CTR
Brand	COMPUMATIC
Model Number	IR40T
Colour	Black and Red
Material	Plastic
Size	6 Pack
Manufacturer Part Number	TC100rib
Manufacturer	CTR
Country of Origin	USA

COMPUMATIC(6 Pack) COMPUMATIC Compatible/Replacement Calculator Ink Roller Black/Red IR-40T for Casio HR-100TM, Casio HR-150TM, and More

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