42735 Mineral Insulated, Compression Style Thermocouple. This Type K Thermocouple Has A Bendable Probe That Is 3/16" Diameter By 4" Long. It Has 24" Fiberglass Insulated Leads With Stainless Steel Braiding. This Thermocouple Is Ungrounded. 3/8" OD x 1-1/4" Long Transition Fitting with Strain Relief Spring. Two-Pin Mini Plug with mating Two-Hole Mini Jack INCLUDED. 1/8" NPT Compression Fitting INCLUDED.