Features: 1.Material:Made of high quality materials. 2.Replace part number:Ignition Switch Lock:707835; Door Lock Cylinder:706592; Key:598007. 3.Fit for Cadillac Escalade 2003-2006, Chevy Silverado 2003-2006, Chevy Suburban 2003-2006, Chevy Tahoe 2004-2006, Chevy Avalanche 2003-2006, GMC Sierra 2003-2006, GMC Yukon 2003-2006, H2 2003-2007. 4.Installation:They are easy to install and directly to replace the last cylinder without any special tool. 5.Please confirm OEM number before purchasing. Package Included: 707835 ignition switch lock cylinder*1 706592 front door lock cylinders*2 598007 keys*2 copper sheets*2 .