Sealey VS1900 Cleaning Brush Set Injector Bore 14pc Features and Benefits:Ideal for cleaning and decarbonising areas with limited access, especially injector apertures before refitting. Contents:3 x Brass brushes – 18mm, 20mm, 25mm.2 x End brushes – 15mm, 19mm.1 x Steel rod.1 x Rod.6 x Nut M5.