A little bit of i.d. help please.

[Dave Bagwill]

Just found these items together in a little bag in a dusty (redundant) corner - any idea if they belong together and if so what purpose they serve? There is no screw hole for the socket-head screw. The thicker shaft of the other tool does in fact slip into the female part of the other thingie.
Sorry to be so technical. :-)
Thanks

[Herman]

Easy question: A rocket launching set.

[Dave Bagwill]

That's IT!!! I've been tinkering and tinkering with this thing in the back yard and haven't been able to launch! Thank you Herman.
Expect incoming over your house in two hours!!

[dave d]

Perhaps you know this already, but the part formerly known as " female part of the other thingie" is a router collet. Looks like a 1/2" collet, so if you were going to use 1/2" router bits, you would replace the one that's currently on your router (probably for 1/4" bits) with this one.

It doesn't need an allen wrench to put it on. A regular box-end wrench tightens it.
I don't know what that other thing is that looks like a top, or why you'd put one into the router collet. The mystery continues...

[Dave Bagwill]

Thanks dave d - I did not in fact know that that part was a router collet. Now I do, and I think that completes my task of knowing everything that can be known in the universe. Except what that other part is. :-)

[Eric_K]

The other doohikie might be a centering cone for said router....... maybe

[Dave Bagwill]

I will see if that works, thanks.