VALVE SEAT CUTTER KIT CARBIDE. VALVE SEAT RESTORATION SYSTEM. HSS valve guide REAMERS. (Extra long Helical Flute). SEAT CUTTERS CAN BE USE FROM BOTH SIDES FACE AND DEGREE. 2x INTAKE CUTTER HEAD 30 45. 2x EXHAUST CUTTER HEAD 30 45. 2x CUTTER HEAD 60 BOTTOM CUT. 3x GUIDE STEM SELF PILOTED REAMER.