If you look at the illustration you'll see it's not a Collet Die pin. Those are straight from the decapping pin end almost to the top end, but then have a slight head spread out out at the top so they don't fall through. The ones we are talking about are thinner for a length at the top so the FL die collets can all be made the same size, with only the last inch or so shaped to act as the expander. Mine has an expansion segment that is a uniform 0.2229" from one end to the other, while theirs are about that at the far end from the decapping pin and only 0.208" at the end near the decapping pin.
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