The CTA Injector Seat and Chamber Cleaning Set (7810) cleans injector seats and holes prior to installation of new injector. Cleaning the seat and hole is a crucial step in the installation process of all injectors.
The kit includes two metal brushes (20mm and 25mm) for injector hole cleaning, two front brushes for injector seat cleaning, one front brush extension, two seal plugs to close injector hole while cleaning, one seal plug holder to install and remove plug and one sanding kit with paper and paper support.
Link: CTA Tools