We have not tested our thermal roll products with Brady printers. However, the RL985TT is a thermal transfer 4" x 6.5" label on a 1" core with an outer diameter of 4" which appears to match the Brady i1700 specifications. You'll just want to make sure the printer is set to gap sensing before printing. If you'd like to test our thermal material with your printer, you're welcome to visit the Sample Request page below. https://www.onlinelabels.com/samples