What crank handle to buy

A handy person from Washington, DC says:
I'm buying the 39-138 and 39-139. What crank handle works with these products? 39-114? 39-1034?
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Tom from SWISCO responded:

We sell a bunch of handles that are fully compatible with the 39-138 and 39-139. The 39-114 is one, but you also have the 39-114L  long version and the 39-205 folding version. Those are just two examples, but they're the most common.

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