Image is Representational - See Manufacturer Specs | 2 Conductor - Thermocouple extension cable - Sheilded - Jacketed The CTC-0018-20-9/5-9 is a Thermocouple Extension Cable. Type Multi-Conductor Number of Conductors 2 Wire Gauge 20 AWG Conductor Strand 19/32 Conductor Material Alumel Chromel Jacket (Insulation) Material Ethylene Tetrafluoroethylene (ETFE) Jacket