Technicians will appreciate this set of rethreaders that have been designed to repair exhaust temperature sensors bungs. Because of extreme heat cycles and the corrosive environment of modern diesel exhaust systems, the EGT sensors become very difficult to remove without damaging the exhaust system. The shape and depth of the fittings are such that standard rethreaders cannot be used. These rethreaders are designed with a specific geometry that allows them to cleanup most types of damaged EGT sensor bungs and allow a new sensor to be installed without needing to replace the very expensive exhaust system. The six different sizes and one special drive adaptor that are included in the kit will accommodate repairs of most, if not all, EGT sensors used on cars, as well as light, medium and heavy duty trucks on the road today. Features. Square drive allows use of standard driver. Squaretohex adaptor allows the use of 14mm or 9/16. socket or wrench. no need to remove or replace the exhaust system6 Sizes Include. 12 x 1.0, 12 x 1.25, 12 x 1.5, 14 x 1.25, 14 x 1.5, 16 x 1.5Specifications. Weight 1 lbs