The High Temp Industrial Probes go to very high temperatures and the stems are completely sealed against moisture. The mineral insulated sheath can be easily bent to any shape and is perfect for high temp ovens and furnaces, and are often used as long-term solutions to monitoring fireboxes and grill hoods. They can also be semi-permanently installed and will resist the weather and steam. The metal sheath section can go to 2,012°F! Available in two diameters, 1/16" (K-420) or 1/8" (K-425). The smaller diameter is faster and somewhat easier to bend. The larger diameter normally survives longer however, both should last for many years with modest care. Longer cables available upon request.