They look like a punch but not sure, they came with R8 collets that are split on the bottom looks like to clamp down on them. Idk.
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Depends on the application of course but they do exist.Look like punches to me also. The only other possibility is ejector pins for die casting dies, but I've never seen one with a point on it before, so I'm going with punch.
SECO is a large highend tool manufacturer, I use a good deal of their inserts for lathe work and a considerable number more for face milling applications, excellent tools but a bit pricey for hobbyists I suspect.They came in a Seco box.
Possible they were just tossed in an old SECO tool package when they went out the door after years of use, most ejector and core pins have one particular mold that they fit.Yeah I'm familiar w/Seco. Didn't know they made pins like this though.