The tool itself has a grinding head. If you are skilled, it will not leak if it is not ground. Very convenient. Grinding head specifications.
Large Carbide Mounted Valve Seat Cutter Set 12PCS |30° 45° 70° Valve Seat Reamer
12x Large Carbide Mounted Valve Seat Cutter Set 30 45 70 (20 Degrees) USA TOOLS
Large Carbide Mounted Valve Seat Cutter Set 30 45 70 (20 Degrees) ACTOOLS
Large Carbide Mounted Valve Seat Cutter Set 30 45 70 (20 Degrees) BLUEFOX
12x Large Carbide Mounted Valve Seat Cutter Set 30 45 70 (20 Degrees)
New Large Carbide Mounted Valve Seat Cutter Set 30 45 70 (20 Degrees)
