After months of testing MIP team drivers have compiled the most parts packed diff rebuild kit available! This package is stacked with the right blend of American high grade diff components including tungsten carbide diff balls, diff rings, 2-piece captured thrust assembly, machined aluminum T-Nut, and new spring/screw. The entire diff rebuild combo pack replaces all necessary diff components so that you don't have to sacrifice diff integrity due to using old worn components. Give your diff and your wallet the advantage of the buying MIP's all carbide diff rebuild kit!