FEATURES: Fitment: Works on 2005~2011 GM Duramax 6.6L Engines Great Compatibility: Works on 2005-2011 GM Duramax 6.6L Engines. Works in an easier way to save your time and money. Upgrade Design: Safely pulls the injectors from the cylinder heads without pulling the injector cups and without causing damage to the injector body. Superior Quality: Advanced heavy duty steel with black oxide finish, durability, impact and wear resistance, anti-corrosion and anti-rust. High precision and hardness to provide a much longer service life. Easier Work: Replace OTC 6779 and Kent Moore J-46594. .