GM 8.875in. 12 Bolt Truck Kryptonite Steel Cover For Use On GM 8.875in. 12 Bolt Truck Rear Axles;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 Cover - BTF11013 BTF11013 Differential Covers