Review on 🏢 Simpson STB2 50334 - Enhanced Durability for Cracked and Uncracked Concrete by Scott Ward

I installed 25 of these clips and they hold up well. You have to suck the dust out of each hole. Do not attempt to use the compressed air technique unless you wish to wear an isolation suit! Only one slipped when I put it on and I had to drill another hole to hook it. Maybe it was a gap in the concrete, I don't know. What I can tell you is that drilling 25 4 inch deep holes in poured concrete with a hammer drill really is no fun!