Product review (4 stars): It works
It would have had 5 stars, but it wasn't exactly as advertised (although I was able to make an adjustment). And I don't know how long it will last. The price was 1/4 to 1/5 of the retail price from the manufacturer (I have no idea if this is a knockoff. I'm not inclined to think that.), which should be a caution. Ask me in a year and I'll let you know how it's going. I'm optimistic.