Really dumb question - 5C collet closing

How are 5C collets tightened? They're threaded inside & out, so I suppose that a drawbar is used. But I don't see any drawbars for sale, except really exotic ones for $100's. Is it just assumed that the drawbar is something that comes with the lathe/mill/chuck? Or that one just makes one's own?

Puzzled, Bob

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Bob Engelhardt
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