I say again don't buy their intake valves.
Reason I say this, is because they stated on the RockAuto.com website their stem diameter is 7.925mm
I called Sealed Power to confirm this and they said that it is correct.
Bentley states new intake valve stem diameter of 7.970mm.
Bentley also states wear limit on said valves of 7.920mm.
.05mm is the equivalent to .002" rounded up (.0017")