This is the latest model of this miracle close-up effect now with several advantages:

You can now perform the effect on the spectator's hand and set-up takes less than a minute!

Also - fits in the pocket.

The Effect:

A bolt threaded into a nut visibly unthreads itself. The nut and bolt can be totally isolated in a clear container. The spectator may thread the bolt into the nut and he can examine thoroughly. No strings, elastic bands or exchanges.

This uncanny PK effect is as close to real magic as you will ever get.

Supplied with a nut and bolt, clear case, and gimmick with detailed instructions.