LS RS B18A B18B B20. VALVE SEAT CUTTER KIT CARBIDE TIPPED. 1 x 45 Degree for Intake. 1 x 45 Degree for Exhaust. 1 x 60 Degree for Intake. 1 x 60 Degree for Exhaust. 1x VALVE GUIDE REAMER HSS. 1x VALVE GUIDE STEM. PLEASE FEEL FREE TO ASK ANY QUESTIONS.