The Terauchi 1.2 mm replacement loop wire is for removing files with the coronal portion smaller than 1.2 mm. The replacement loop goes into a Terauchi loop device.
For a demonstration on how to replace the loop, see the video below
https://www.youtube.com/watch?v=jowEaQtSIdY
*note that the video has 0.12 mm but is supposed to say 1.2 mm.
Note that the compare at price is compared against shipping internationally from another supplier. We do not ship the loop internationally (outside of Australia)