Includes 2 High-Strength Steel Lift SpacersPrecision Laser Cut from High Strength Steel for Perfect Fitment.Proprietary Protective Coating to Prevent Oxidation, Corrosion & Rust.Designed to Be Used as 1/2" Rear Leveling Lift Kit or as a Booster Kit.Improves the Look of Your Vehicle and Overall Ride Quality & Comfort.Compatible with Stock Suspension and Most Aftermarket Leveling and Lift Kits.Simple Instructions for Easy, Do It Yourself Installation.? WILL FIT 6-LUG MODELS ONLY.? WILL NOT FIT VEHICLES EQUIPPED WITH ADAPTIVE RIDE CONTROL / MAGNE-RIDE / AUTO-LEVELING SUSPENSIONS.Supreme Suspensions Spacers are precision laser cut out of one High Strength Steel Plate and finished with a black proprietary powder coat to prevent oxidation and rust, ensuring a lifetime of dependability under even the most extreme riding conditions. These spacers can be used on stock suspension, with leveling and lift kits or as a Lean Spacer Fix.If you’re looking to level the stance of your truck, fit larger wheels and tires or pick up some ground clearance out on the trails, we have a kit tailored specifically to your truck and your needs.IMPORTANT:Please note that spacer thickness to lift height is NOT a 1:1 ratio; it is recommended that you measure your vehicle ride height before and after to see the full lift amount has been achieved.