Psy-Key II (ala carte, Key Only) by Chazpro

Psy-Key II is Chazpro's Haunted Key routine with a modern key. This new, second version features a completely concealed magnet in a GM (General Motors) common key.

Effect

The key can turn over on your hand, on the table covered with a glass or even on a spectator's hand.

Comes complete with instructions and GM key. 

Psy-Key II is also available in a kit including the BAT Magnet, instructions and also the same key marked GM. This the related links