This is a set of 5 reliable wire K-type thermocouple with a Type K temperature sensor. The beaded sensor is at the tip of a 3ft long wire probe, which has a high temperature PFA plastic insulation. This Teflon PFA based high temperature insulation makes the K-type thermocouple easier to clean than fiber glass insulation. It has a miniature k-type connector that will work with digital K-type thermometers. This k-type thermocouple probe can used to measure air or gas temperatures, it can be attached to pipes or embedded into objects you want to measure. It also can be used to test non corrosive liquids, such as water, oils or waxes. Works with k-type digital thermometers from many manufacturers, which are often used in laboratories and science.