Application: C7 Injector sleeve cup removal installation tool is suitable for 3126B Cat HUEI injectors 10R-0781, fit for Caterpillar Marine Model 3126 / 3216B, for Cat C7 C9. Superior Quality: The high-speed steel cone used in the disassembly tool is of the highest quality currently available, with anti-rust and anti-corrosion effects, ensuring an unparalleled long life. Advantage: 3126 injector cup tool will still stay sharp after using this tool hundreds of times. Easy to use, just open the cylinder head to complete this job, saving you time and money. Nice Design: .