Late for supper, again. Seems like a normal situation for me. There are wedges, sort of "U" shaped, but with square corners. They came with mine when I bought it new, but should be available at most any supply houses. I've only used mine on the machine, but they should work just as well on the bench.
For what it's worth, mine came with a 5/8 chuck. I moved it to the small lathe and mounted a 1/2.
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