3rd to 6th Generation. VALVE SEAT CUTTER KIT CARBIDE TIPPED. 1 x 30 Degree for Intake Top Cut. 1 x 45 Degree for Intake Base Cut. 1 x 30 Degree for Exhaust Top Cut. 1 x 45 Degree for Exhaust Base Cut. 1 x 60 Degree for Intake Bottom Cut. 1 x 60 Degree for Exhaust Bottom Cut. 3x VALVE GUIDE REAMER HSS. 3x VALVE GUIDE STEM. PLEASE FEEL FREE TO ASK ANY QUESTIONS.