VALVE SEAT CUTTER KIT. MODERN BIKES, ATV’S. CUTTER SIZES AS UNDER. 45 DEGREE ANGLE CUTTERS. 32 MM, 30 MM, 29 MM, 28 MM, 27 MM, 26 MM. 25 MM, 24 MM, 23 MM, 22 MM, 21 MM 70 DEGREE ANGLE CUTTERS – 28 MM, 25 MM, 23 MM. VALVE GUIDE HONE REAMER HSS. 4.5 MM, 5 MM, 5.5 MM GUIDE STEMS. 4.5 MM, 5 MM, 5.5 MM ARBORS + DRIVE RODS. FEEL FREE TO ASK ANY QUESTION.