The Mafrotto short  double stud with smaller 1/4" Screw one side and 3/8" on the other and hex either side, you can reverse this stud into a Super Clamp socket. Use it directly with equipment that features a 1/4" socket or 3/8" socket, or with a camera head. Made from chrome steel.

We have other sizes of stud available like the larger 3/8 threaded end.