Review on Plastic Expansion Drilling Concrete Curtains by Seth Damain

I had problems using it. Six screws broke right next to the head because it was almost completely screwed in. I also had a plastic part break on at least 2 of them and could have been more as some of the screws are not as tight as I would like. I can go back and replace the six I put in today. The rest I throw away and don't use.