4022-14 Ceramic Wire Connectors Are The Twist-lock Or Nut Style Made For 18-22 Awg Wire. These Porcelain Wire Connectors Are Rated For High Temperature Thermocouple Wire Applications For Up To 300 Deg C With A Maximum Voltage Of 300. These Connectors Can Handle Solid Thermocouple Wire Or Stranded Thermocouple Wire. Pack Of 100 Pieces