The SP Tools Sensor Socket Set, No.15300-EGT, is designed to remove exhaust temperature sensors on most modern automobiles. Because of heat cycles and the corrosive environment of the modern diesel exhaust system the EGT sensors become very difficult to remove without destroying them. These sockets are designed to drive all six sides of the hex equally to reduce the chance of damage, and they are reinforced to eliminate flex. The complete set includes three different sizes (13mm, 14mm and 17mm) and two different styles engineered to remove most, if not all, EGT sensors used on cars, as well as light, medium and heavy duty trucks.