Leaf Spring Shim Kit, 8 Qty 1/8" ShimsIncludes Center pins Kit comes with Qty 8 of 1 8" shims, 4 for each side of the truck. Use these shims to soften your leaf spring rate or change your ride height. You can use more shims on one side to correct a leaning truck. Can be used between each leaf in a 2,3,4 or 5 leaf pack. This universal kit can be stacked under the spring in 1 8", 1 4", 1 2" as a lift block held on by the center pin. You get all of the options in one kit.