Built from 60,000 PSI ductile iron castings, the vise is virtually indestructible; and is also backed by a lifetime warranty. It comes with a fully sealed one-piece spindle-nut assembly that keeps lubricants in and contaminants out for smooth operation. The precision-machined slide bar eliminates “side-play” movement, regardless of the opened distance. The vise’s serrated pipe jaws are made from machined steel and come with black phosphate coating for extended life. The 360° swivel base has double lockdowns for easy and secure access while in use.