VALVE SEAT RESTORATION KIT. CARBIDE TIPPED 15 PCS. Small Block Chevy Heads. AFR AIR FLOW RESEARCH. 3 ANGLE CUT AS OEM VALVE SEAT. 3 x 1.940 30, 45 & 60 Degree for Intake. 3 1.600 x. 30, 45 & 60 Degree for Exhaust. 1X 11/32 VALVE GUIDE REAMER HSS. T – HANDEL & DRIVE ROD. PLEASE FEEL FREE TO ASK ANY QUESTIONS.