[apbright]

I have purchased 2 sets (of 6) tubes from Snyder's. They are metal stem tubes. I've had one set for about 18 months, the other for about 5 months. I don't recall inspecting the country of origin on the tubes I purchased. Snyder's website claims 'USA.'

So far, no issues with those I have (knock on wood). Well, to be exact, I notice that after about 1 month some will drop pressure from 35psi to ~25psi; I don't know whether that counts as 'an issue.'