The CHANNELLOCK BIGAZZ straight jaw tongue-and-groove plier is as big as the job you need with a 5-1/2 in jaw capacity. Its 12-non-slip, undercut adjustment channels offer a versatile range of adjustments for virtually every field application. This plier is built to last with a PermaLock fastener to eliminate nut and bolt failure, patented reinforcing edge to minimize stress breakage and laser heat-treated teeth to provide a better, longer lasting grip. | CHANNELLOCK 20-1/4" Tongue and Groove Pliers