Review on 🔧 Enhanced 4 20 Flat Reamer Wings Coated for Optimal Performance by Marcus Zimmerly

I used these screws to attach plywood to my roof. They attached to a 3/4 sheet of plywood and then to a 12 AWG steel support with little or no problem. I have a lot of these and am not afraid of my roof falling off. #10 gauge is really very strong, the coating is even and seems to stay on the screws after use. They are worth the time and money! Again, as with the other bolts I received, there is no pressure chart for this bolt. I assumed £400 for a screw and from this other manufacturer it should be £800 worst case. They drilled into plywood and then through a 12 AWG steel beam. Sorry the picture is a bit blurry but this is 3/4 plywood. and steel beam 12awg.