AMC Model 20 Kryptonite Steel DIY Cover Kit For Use On AMC Model 20 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 AMC Model 20 Kryptonite Steel DIY Cover Kit - BTF11081 BTF11081 Differential Covers