VALVE SEAT CUTTER KIT. MODREN HEADS HARD SEAT CUT. ATV’S, BIKES SMALL GAS ENGINE HEADS TO CUT HARD VALVE SEATS. CUTTER SIZES AS UNDER. 45 DEGREE ANGLE CUTTERS. 38 MM, 33 MM, 32 MM, 34 MM, 32 MM, 31 MM, 30 MM, 29 MM, 28 MM, 27 MM, 26 MM. 25 MM, 24 MM, 23 MM, 22 MM, 21 MM, 20 MM. 70 DEGREE FOR 3 rd ANGLE CUTTERS – 35 MM, 28 MM, 25 MM, 23 MM. VALVE GUIDE HONE REAMER HSS – 7 MM, 5.5 MM, 5 MM, 4.5 MM. GUIDE STEMS – 5.5 MM, 5 MM, 4.5 MM, 7 MM. ARBORS + DRIVE RODS. FEEL FREE TO ASK ANY QUESTION.