I bought this 19630 Big Horn vise clamp to attach a vise to a drill press. It has worked well every time I've used it (about 12 hours of use). The tension is quite decent. However, you will not get the same results as the C-clamp. The end of it is nothing special. It's just an ordinary standard fit/finish. If you're looking for a drill vise for light to medium jobs with no frills, I would recommend this one. I might get another one in the future.