These Tradesman Bench Mount Vises have double lock-downs with internal detents to assure incredible clamping power while using the replaceable jaws and 360 degree swivel base. Enclosed spindle design keeps lubricant in and contaminants out for a lifetime of use. Rear anchored nut reduces thread wear. Available in 4in., 5in. or 6 1/2in. jaw width. Made in U.S.A. Limited lifetime warranty.