This prop is commonly called the "Haunted Key" and is available from other sources. Carlyle believes his handling makes it a more believable effect in the eyes of the spectator. I'm not saying that the other versions are wrong, just different.
The KEY used is the most well balanced to be put on the market in his memory. Those that have given up trying to make the KEY turn and not flop over after the halfway point will love this KEY. It enables you to do it in others' hands where you might have failed before.
The important points to remember are that you will have a much short time learning to control this KEY because of how he teaches you to hold the KEY and the patter lines that make it something your audiences will understand and believe.
You may have tried to find keys in antique stores and given up. Look no further, here it is, and at a price, you can afford.
NEW, BUT THE SAME WEIGHT AND QUALITY! IT'S EQUAL TO THE ROYAL HAUNTED KEY