Made of either A-2 or A-6 toolsteel. This was made in the toolroom at Bell Labs in Allentown by one of the best toolmakers there. You won't find another vise like this one. I used this for grinding applications as well as first article inspection. No scratches, goughes, engravings. There are to many specs. I could give you on this, If you are serious about it I will gladly answer any questions you have. Any questions please ask. Priced to sell !!