I just bought this tool from my local Harbor Freight and it worked like a charm.
Water was coming into my wagon at the driver's side front corner, I snaked this tool into that drain and it was going in easily until it stopped. I'd hit the blockage. I turned the handle a turn or two, the block cleared and a small gush of water dumped out in front of the door.
Cleaning the rear drains is trickier, but with a little patience I got the tool all the way through until it came out on top of the sunroof.
Now I'm looking forward to the next torrential rain to confirm that I'm leak free.
This $3.99 tool is so perfect for the job it should have a MB part#. Though I guess it'd then be a $39.99 tool
