"The Wilton Indoor & Outdoor Vise is designed to handle the most demanding clamping applications indoors and outdoors. Unlike most vises that have a fixed center nut, the round channel vise nut is anchored at the rear, which provides straight line pull and even pressure resulting in greater durability. Round channel design also allows for a completely enclosed spindle and nut assembly which keeps debris out and lubrication in for a lifetime of smooth operation. The all-weather vise is equipped with nickel-plated jaws, pipe jaws, spindle and locknuts. The self-centering pipe jaws are grooved to prevent rotation of round stock and have a two-step design to assure a firm hold on both large and small diameter material. Vise is also equipped with a swivel base with dual locking nuts which allows for a full 360 of rotation. Both the locking nuts and base have serrated edges that interact positively to assure a nonslip grip when tightened. Main base has four precast holes for mounting the vise to a work surface. A mounting template is included for quick no-guess hole placement for mounting. U.S.A. Replaceable Jaw Yes, serrated, Jaw Width in. 4 1/2, 360 Swivel Base Yes, Jaw Depth in. 5/8, Pipe Jaw Yes, Double Lock-Downs Yes, Jaw Capacity in. 6. Self-centering nickel plated pipe jaws hold 1/8in. to 3 1/2in. pipe safely and securely Nickel-plated jaw inserts are machine serrated, replaceable jaws that assure a positive hold Enclosed construction keeps lubrication in and contaminants out Perfect for outdoor use Locking swivel base with double lockdowns for nonslip hold in any position Alloy steel slide bar for added strength and keyed for a precision fit Large anvil work surface"