2PC Valve lapper set for hand lapping valves.
5/8", 13/16", 1 1/8" & 1 3/8" cups for small and large valves.
Place valve lapping compound on valve seat or valve surface as directed by compound instructions.
Install valve in to valve guide
Press correct size suction cup firmly on to head of valve
Spin valve lapper tool handle between palms of the hand until a suitable finish is obtained.