So I wanted to experiment anodizing my aluminum commuter frame. Since anodizing for aluminum melts steel, I had to drill out the steel inserts & remove them before anodizing. Wondering if anyone has any experience replacing these? They appear to be inserted into the frame & then drawn-up / squeezed from the inside using a special external puller tool (they look similar to aviation "rivnuts" which I used to install frequently). 1st, does anyone know where I can buy the inserts & second, what tools are required to install them? If I can't find anything, I may use aviation style threaded inserts which will probably work but are aluminum & much weaker. I can also buy the water bottle strap version