I recently inherited several tools from my great uncle who was an electrician for many years. One of the items was a ridgid 450 pipe vise.

My question is: toward the edge of the top of this tripod is a "threaded shaft" with a t-handle that threads up from the bottom. What is this used for?

Also, there are 3 holes that appear to be for bending pipe. Are these just for thinwall or how does this work.


Thanks for any input.

Kevin