I don’t own the tool but after one of my kids broke the antenna off one of his remote control car controller, one of the sections is a perfect fit. I’m out and about but could take some measurements off of that.
Edit: Mic'd it at .135" OD and for the inside, I was able to insert a 1/8" drill bit into it and that mic'd out to .122". I do have some disassembled weather pack connectors and mic'd the male connector loosely @ ~.120"
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