Steelman Underhood Sensor Tool is for use with sensors, such as coolant temp and throttle position, on Ford, GM, Chrysler, Mitsubishi, and Hyundai vehicles. This new terminal tool (BMC Reference C3) is designed to eliminate potential damage to wires or terminal blocks, featuring a knurled finish handle that provides extra grip and is individually marked for easy reference, and this tool is part of 95978 master tool kits.