What is the width of the tongs? Is it the same thing?
I check "QBT 1558.2-1992 vice bench vice", The width of the vice jaw is the same as the opening. If you want "QBT 1558.2-1992 vice bench vice" electronic press, give email address.
The width of the jaw is the width of the clamp. Opening is the maximum distance between two holding ends.
After the clamp is closed, the length of the closure is the width of the tongs. The length of the length of the tongs that are closed to the mouth is the length of the opening.