Roll Specifications:
3 1/8" x 120' Thermal Paper Rolls, 50 rolls/case
3.125"(80mm) width
120' of paper per roll
7/16" core

Popular Applications:

Fits the following First Data credit card machine terminals:

First Data FD100
First Data FD200
First Data FD200ti
First Data FD300
First Data FD300ti

And many more!