This unit accurately moves the work in two directions along the X and Y axis. This is idea for positioning form one machine location to another without losingsquareness or alignment. The cross slide vise gets its strength from the 30,000PSI tensile strength fine grain cast iron it's made from. This USA made vise comes with a lifetime guarantee.Built on the same cross-slide base as our cross-slide tablesFeed screws are precision cut acme threadsDials are graduated in 0.001 in incrementsCounter-balanced steel ball crank handles clear the machine tableEasily convert from a cross slide vise to a traditional vise by simply removing two screws and the baseMade of 30,000 PSI tensile strength, fine grain cast ironLIFETIME GUARANTEE