Review on Optimize Your Connections with PZRT Standard Aluminum Extrusion Connectors by Chris Chincuanco

Be careful to put them where you need them as they are very difficult to pull out afterward. I had to pound them with a wooden block. Make sure you have a couple of large vices on hand, just in case. Yes. Been there, done. :-) They will come out, but we have to work them out. I was expecting them to be much easier to absorb but I'm not at all dissatisfied with the product.