Product review (5 stars): Did what it needed to do
There's nothing special about this, except that someone was smart enough to think of it. A simple plunger with a plastic line attached. Instructions are included. Follow them. Cleared my frozen water line in less than a minute. In my case that was 2 months ago and no further problems. A little pricey for what it is, but I saved a repairman trip so it paid for itself many times over. I can recommend it.