Class 2 thermocouples with ungrounded hot junctions inside flexible mineral insulated 316L (Type J) or Inconel 600 (Type K) stainless steel sheath, with an electrical plug, and with an optional shielded PVC extension cable. Maximum operation temperature: 600°C (TC J) or 1000°C (TCK), 200°C on the connector and 90°C on the cable.