Slip Joint Pliers
Slip-joint pliers contain a movable pivot point that allows them to extend the range of their jaws to grab, turn, and bend materials of varying thicknesses. Nails, staples, and other slender objects are gripped by finer teeth towards the tip of the jaws. Nuts, bolts, tiny pipe, and other spherical things are gripped by coarser teeth near the back of the jaws. They bend rods, pull cotter pins, crimp sheet metal, tighten or loosen fasteners, and do a variety of other things.