SUPERTOOLS 5PCS Laser Diesel Injector Seat Cutter Clear Repair Tool Set TP1201 19 mm hexagon pilot. 15 x 19 mm reamer for Universal Injector. 17 x 17 mm reamer for Delphi/Bosch Injectors (BMW, Peugeot, Citroen, Renault). 17 x 19 mm reamer for Bosch injectors (Mercedes CDI). 17 x 21 mm offset reamer fits for Fiat / Iveco.