This is an 8-piece injector sleeve remover, installer, and injector height tool set designed for Caterpillar CAT 3406E, C-15, and C-16 engines. Compatible with: Caterpillar CAT 3406E / C-15 / C-16. This tool set is a practical choice for technicians who need the right fit, dependable strength, and accurate results when working on compatible Caterpillar engines.