Works great but...
It's a great product as an add-on to the 7 pc. Dura-block kit. I really like it, and it works great.  I'd give it 5 stars but... It has a short-life (-1) and it's expensive (-1) so I'll be back to GoJo or Goop, or something in-between that's off-the-shelf locally.
Rating: 3 stars