Specification Brand : RJSPHH BulletPoint1 : 6778 - Designed to pull injectors on a GM Duramax 6.6L engine, 2001 - 2004. Similar to J-44639. BulletPoint2 : 6779 - for GM Duramax 6.6L engine, 2005 - 2011. Similar to J-46594. BulletPoint3 : 7222 - For 6.6L duramax diesel engine 2001-2021. Similar to J-45910 BulletPoint4 : 7222 Injector Tube Remover specially designed to remove the injector tube for maintenance and re-installation. 6778 & 6779 Injector Puller used to safely pull the injector from the cylinder head without pulling the injector cup BulletPoint5 : One Year Warranty for it. If you have any problem ,please contact us and we will respond you on 24 hours ExternallyAssignedProductIdentifier1 : 0014679046894 ExternallyAssignedProductIdentifier2 : 014679046894 IncludedComponents : Injector Tools ItemName : RJSPHH 6778 & 6779 Injector Puller Tools, 7222 Injector Tube Remover/Installer Tools for GM 6.6L Duramax Diesel, Replace J-44639 J-4659 J-45910 ItemPackageDimensions_Height : 20 centimeters ItemPackageDimensions_Length : 8 centimeters ItemPackageDimensions_Width : 4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : automotive-puller-sets Manufacturer : RJSPHH ModelName : Injector Tools ModelNumber : PYQGJ NumberOfItems : 1 PartNumber : PYQGJ ProductDescription : Injector Puller Tools Injector Tube Remover/Installer Tools SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 25170000 WarrantyDescription : 1 Year