The high quality precision vises supplied by Jacob Iron Works are made of strong FC25 the high tensile casting, stress relieved, highly stable and good wear-out resistant. We have more than 35 years experience manufacturing of precision vise. Product types include quick grip fixture lock, quick grip drill press vise, standard drill press vise, central sliding bar type vice and cross vise, etc. Please contact us for more if you have any further question or comments for our products.