Fits: (Please check your vehicle compatibility before buying) 2021-2023 For Ford F-150 2WD 4WD Specifications: Quantity: 2X Rear Lift Blocks & 4X U-bolts Install Location: Rear Lift Height: 2" (2 inch) Rear Material: Steel Color: Black --ABOUT THE DIFFERENCE BETWEEN THE ACTUAL THICKNESS OF THE SHIMS RECEIVED AND THE ACTUAL THICKNESS? .
