VALVE SEAT CUTTER KIT. 1x 30 DEG INTAKE TOP CUT. 1x 45 DEG INTAKE BASE CUT. 1x 60 DEG INTAKE BOTTOM CUT. 1x 30 DEG EXHAUST TOP CUT. 1x 45 DEG EXHAUST BASE CUT. 1x 60 DEG EXHAUST BOTTOM CUT. 3x VALVE GUIDE STEMS LONGER HEAVY DUTY. 3x VALVE GUIDE REAMER SELF PILOTED. THE ABOVE KIT IS MADE TO COVER MOST OF. THE OTHER MODEL ENGINES. WE ARE THE MANUFACTUERE OF THESE TOOLS AND OTHER ENGINE BUILDING TOOLS & SUPPLIES. Feel Free To Ask Any Question.