Originally Posted by Daddy-O

I was looking into this today and found with the small "nano" clamp you'll need a 1/4"-20 stud to connect the clamp to the ball mount. Manfrotto makes a version of the clamp (the 386BC) that includes the stud for $3 extra but it's backordered everywhere. Sorry, I didn't catch they both had female sockets when I made my original post. If you got that one, you should be able to use a short (.5"-.75") 1/4"-20 stud (threaded rod) with a nut in the middle from a hardware store. The other two larger clamps come with the stud.