Diesel Injector Puller / Slide Hammer for BMW M57N & M57N2This kit is the perfect kit for the M57N & M57N2 when removing stubborn injectors. This tool will suit many cars and engines with Bosch and Lucas Injectors. Kit comes with 3 adaptor sizesM8, M12, M14 Complete In Case Constriction: The automotive hammer puller tool has a steel rod with two threads helps to increase pulling strength to pull the toughest injectors from tight positions. Easy to use: Install the tool on the injector while the engine not