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.

ASIN	B071R331GC
Best Sellers Rank	73,302 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 11 in Printing Calculators
Guaranteed software updates until	unknown
Item model number	IR40T
Manufacturer	CTR
Product Dimensions	17.78 x 12.7 x 1.27 cm; 4.54 g

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

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