I have a flatbed that I am wanting to build different sides for. It has the tapered 3 1/2" pockets built into the bed. The current sides has a steel stake that comes up about 3' high where wood boards are attached.

I am really wanting to find more of these steel stakes. I have had absolutely no luck at all. I have found steel adapters that allow you to put a 2x4 on, but I want the stakes to be all steel coming out of the bed. I was hoping someone on here might know where I can find some.