[rohrmann]

I ignored that comment, as the author apparently is not familiar with the Pullrite wrap around jaw mechanism. Many of the other brands, especially with the clam shell jaw design can be backed into with the jaws closed, and they open to receive the pin, and close behind it when the pin is seated. Then a secondary latch must be closed to prevent the mechanism from opening. And what was said earlier, DO NOT PUT YOUR FINGERS NEAR THE TRIGGER that causes the mechanism to close. I have used a long wrench to trigger it, and things happen very fast.