4x Premium Electrostatic Powder Coated U-Bolts2x Billet Rear Lift BlocksInstallation Instructions*Rear kit will only work with Spring Over Axle conversion - Please check your setup before orderingOur Pro-Billet Series Rear Lift Kits are precision engineered to lift and level your truck. The rear lift blocks are machined from T6 Aircraft Aluminum, then an Anodized coating is applied to protect from rusting. Unlike steel blocks that are cut-out and welded together, our Pro-Billet kits are built as a solid piece and will not bend or warp when stress is applied. We complete this kit with high grade hardware and extended OEM spec U-bolts.NOTES: An alignment is always recommended after altering the height of your vehicle.