One word of warning: The traveler model has a o-ring that holds the rear of the jaws together. Put a second O-ring on it. There is plenty of room for two. The reason for doing it is if the o-ring breaks(and I had one that did) there is a ballbearing in it that falls out. I was doing a demo and on my travels when it broke. I was lucky that the vise was in a plastic shoe box and I did not lose it. The vise will not work without the bearing. I put a rubber ban on it until I got 2 new o-rings on it. This way if one breaks there will be pressure on it to hold the bearing in place!