Features: * M 18 x 1.5 piloted reamer tap - no drilling necessary and insures perfect alignment of new tapped hole * Corrosion resistant stainless steel inserts * Eliminates costly exhaust manifold replacement when only the oxygen sensor hole is stripped What"s In The Box: * (1) pilot reamer tap * (1) install tool * (6) M18 x 1.5 inserts * Molded case