Tongue and Groove Pliers
In applications where insulated, non-sparking, or other special environment pliers aren't required, general purpose tongue-and-groove pliers provide a wide jaw-capacity range to grip and turn pipes, fittings, fasteners, and other things. They have an adjustable pivot point for sliding their lower jaw up or down a grooved channel to set the distance between the jaws, and are also known as multigrips and groove-joint pliers. The jaws are tilted from the handles to provide leverage and lock into place at the proper position. They remain parallel to maintain grip.