7pc Diesel Injector Seat Cutter Set Re-face the diesel injector seat in order for the new or reconditioned injector to be fitted correctly. Clean and re-cutting of injector seat. Avoid a high risk of "blow-by" occurring cause of the build up of carbon deposits Contents: 15 × 19 mm flat reamer -- Universal applications 17 × 17 mm angled reamer -- Mercedes- Benz CDI 17 × 17 mm flat reamer --Compatible with Delphi / Bosch injectors (PSA/RENAULT) 17 × 19 mm flat reamer--Compatible with Bosch injectors (Mercedes CRD) 17 × 21 mm angled reamer -- Fiat. 1 × pilot post 1 × T handle