GM 8.875in. 12 Bolt Truck Kryptonite Steel DIY Cover Kit For Use On GM 8.875in. 12 Bolt Truck Rear Axles;This Is An Unassembled Cover And Requires Assembly And Welding;Fabricated 1/4in. Steel Plate For The Cover;3/8in. Steel Plate Ring For The Mounting Base;All Covers Are Shipped Unpainted Blue Torch Fabworks Blue Torch Fabworks GM 8.875Inch 12 Bolt Truck Kryptonite Steel DIY Cover Kit - BTF11070 BTF11070 Differential Covers