The ProMAXX Bullit ProKit is designed to address broken exhaust manifold mounting bolts in heavy duty diesel engines with just one device. It takes out any repair risk and eliminates the guesswork of what has always been an extremely time-consuming repair, the company says. The tool is built to service Caterpillar, Cummins, Detroit Diesel, International, John Deere, Kubota, Volvo, and more.