I designed these hinges for my LP640 project, but ended up selling it before I got a chance to use them. I used 3/8" steel and cut them on a waterjet. They have a 1/2" steel pivot pin, with bronze (oil-impregnated) bushings. They're slotted exactly the same as OEM hinges would be. I also have threaded 3/8" plates that I was going to weld in the fenderwell to bolt the hinges to. I have a few extra pieces left over that I never welded also if you wanted to weld your own hinge setup to them. I'm selling the one complete set of hinges and mount plates for $60, and I'll sell the other pieces for $40 if you wanted to build your own.