QSA 2" Adjustable Torsion Leveling Lift FORGED Keys + Shock Extenders - Compatible with 2000-2010 Chevrolet Silverado 1500HD, 2500HD, 3500HD Fits RPO Codes FK2-FK3, FF6-FF7, FF8-FF9 Check Glove Box! Includes: Heavy Duty Forged Torsion Keys (L+R) AND Shock Extenders Allows for leveling (lifting) the Front of Your Vehicle Between 1" - 3" However, we dont recommend going above 2.5" The Keys and Extenders both have a High Quality Powder Coated Finish to Protect from Rust Easy Installation Keys Fit: 2000 - 2010 Chevrolet Silverado 1500 HD / 2500HD / 3500HD Plus More