Pliers Channel Lock

channel lock
(Channel-Locks) Slip joint pliers are pliers whose pivot point or fulcrum can be moved to increase the size range of their jaws. Most slip joint pliers use a mechanism that allows sliding the pivot point into one of several positions when the pliers are fully opened.
A person who cannot answer your question or have a dialog with you without forcing you to first go through their channel or script of numerous comments or questions that may have little to do with your primary interest.

pliers
Pincers with parallel, flat, and typically serrated surfaces, used chiefly for gripping small objects or bending wire
Pliers are a hand tool used to hold objects firmly, for cutting, bending, or physical compression. Generally, pliers consist of a pair of metal first-class levers joined at a fulcrum positioned closer to one end of the levers, creating short jaws on one side of the fulcrum, and longer handles on
a gripping hand tool with two hinged arms and (usually) serrated jaws
(plier) someone who plies a trade