... 1.Conductors:positive-Chromel, negative-Alumel 2.Insulation:Braided fiberglass 3. Overall Jacket:Fibergla Thermocouple Extension wire Type KX- 2x24 AWG FG/FG ... (ANSI/ASTM E230)3, DIMENSIONS AND TOLERANCES Dimensions / tolerances (mm)(1.6±0.25)×(2.5±0.25)4, CALIBRATION TOLERANCE ... *0º to 400ºC±2,2°c or 0.75%±1,1°c or 0,4%*whichever is greaterThermocouple type available: KX ...