VALVE SEAT CUTTER KIT CARBIDE TIPPED. DIRT BIKES, GO KART, ATVS, MOTORCYCLES. CUT HARD VALVE SEATS. Mill In The Following Sizes. 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 INNER ANGLE – 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.