Abstract: A pliers is adjustable between at least two distinct selectable size ranges. A movable pivot pin is held stable in a selected recess of a slot in both loaded and unloaded conditions. A lower jaw is adjustable between a small and a large size range. A multifunction spring is movably attached to a body to both firmly bias a lower jaw and handle to an open position and to retain the pin in a constant selected pivot position of the body for normally used conditions. The pliers include a familiar function and compact shape without additional bulk from the structures of the improved features. Only a simple wire form is required to provide the improvement of the invention in a preferred locking pliers embodiment.

Abstract: A locking pipe wrench includes an upper movable jaw and a lower jaw attached to a toggle assembly whereby work can be firmly clamped and held between the jaws by adjusting the position of the upper jaw and by locking the lower jaw into position against the work by means of the toggle assembly.