Yeah they don't have blades specifically for a terminal type. It's done by size. So you tell them the terminal type and they order it. If they can't find it you send a sample. Then they measure the two crimp points and determine the proper blade sizes. Since each crimp uses its own blade it gives the machine much more flexibility. Now specifically how do they measure to determine the correct blades? I have no idea.
By they way you want your terminals to be spooled, not individual pieces.
By they way you want your terminals to be spooled, not individual pieces.