● Professional tool for commercial or occasional use. ● Suitable for a wide range of diesel vehicles. ● Set of 5 cutters for re-cutting injector seats when reconditioning diesel engines or replacing the injectors. ● Re - face the diesel injector seat in order for the new or reconditioned injector to be fitted correctly. ● Manufactured from high quality materials - SKD11 - provides easy clean work. ● This set is used to clean and decarbonise injector seats when changing injectors. ● It helps to avoid blow back due to poorly seated injectors. ● Various cutters are available for nearly all diesel cars. ● Injectors can be extremely difficult to remove, due to the build up of carbon deposits and the effects of corrosion. Once they have been removed, the injector seat is often in a condition that makes it almost impossible to successfully seat the injector (causing high risk of blow back - this is where the leaking of combustion gases from the cylinder via the injector seat). This can lead to various poor running and starting symptoms, excessive smoke, tar build up, noise and loss of compression. ● The injector seat cutter set allows the user to reface the seat, in order for the new or reconditioned injector to be fitted correctly. ● Recommended that refacing of the injector seats is done with the cylinder head removed to avoid the risk of metal filings entering the combustion chamber. ● Comes with a full set of instructions for easy application.Diesel Injector Seat Cutter Cleaner Set Universal Injector Cleaning Tool Kit1 x 15mm x 19mm flat reamer. 1 x 17mm x 17mm flat reamer. 1 x 17mm x 19mm flat reamer. 1 x 17mm x 17mm angled reamer. 1 x 17mm x 21mm angled reamer. 1 x T handle for easy application 1 x pilot post.