1. FITMENT -- 7222 Injector Tube Remover fits for 6.6L , 2001-2021. 6778 Injector Puller for 6.6L engines 2001-2004. 6779 Injector Puller for 6.6L engines 2005-2011. 2. REPLACEMENT -- 7222 Injector Tube Remover is the same as J-45910 in function and performance. 6778 Injector Puller similar to J-46594. 6779 similar to J-46594. For a simple repair or the most complex drivability concern, 6778 & 6779 Injector Puller and 7222 Injector Tube Remover/Installer Tools solve problems faster, and at better value. 3. FUNCTION --7222 Injector Tube Remover specially designed to remove the injector tube for maintenance and reinstallation. 6778 & 6779 Injector Puller used to safely pull the injector from the cylinder without pulling the injector cup. 4. MATERIAL -- All parts made of Metal with solid and sturdy, black coated to resistance to and rust, protection, years of trouble-free use and continue to perform as designed. Colour:Black Material:Metal Package Contents: 1x Injector Tube Remover/Installer Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.