Check the listing for details. AWG 24 K-Type Thermocouple Solid Wire Vinyl PVC Insulation 110 Yard Roll Spool. Condition: New. Listed at 234.90 USD. Standard Solid K-type Thermocouple Wire with PVC insulation - 110 yard roll - This is a k-type thermocouple wire with yellow vinyl PVC insulation, which is good up to about 105 °C or 221 °F. This k-type thermocouple wire can be used to make your own thermocouples for a wide range of applications, or to make your own K-type thermocouple extension wire. When you use this double vinyl insulated K-type thermocouple wire to build a K-type thermocouple extension it can transmit the temperature signal over the full K-type thermocouple range, from -300 to 2500 degree Fahrenheit, or -180 to 1370 degree Celsius. You just need to use the wire in a section that is below 221 °F, so that the vinyl insulation does not melt. This type K thermocouple wire frequently is used to connect K-type thermocouples to a type K thermometers, a PID controller or a machine PLC. The chromel alumel wire is made to ANSI standard thermocouple specifications. This is a solid wire, it is AWG 24 or about 0.5 mm conductor thickness, therefore especially useful for k-type extension wires. It is sold in a 330' ft (or 110 yard, 100 meter) spool, especially useful in your shop or when wiring up thermocouples in a factory. Specification K-type Thermocouple wire for making thermocouples or extension wiresChromel / Alumel type K thermocouple wire with Standard Accuracy (whichever is greater): +/- 2.2 °C or +/- .75%Solid wire, AWG 24 (0.51 mm)ANSI color coded PVC insulation, red = -, yellow = +Sold in a 110 yard (330 ft, 100 m) spool