Product Description Founded in 1886, Channellock is a worldwide leader in the manufacture of high-quality pliers and assorted hand tools. Now run by the fifth generation of the DeArment family, Channellock tools reflect a tradition of dedication to excellence maintained for well over a century. Over the years, Channellock has obtained several patents including one in 1965 for the conical surface created on the cam side of the pliers when undercut and another in 1984 for the PermaLock fastener found in its Tongue and Groove Pliers. Channellock still manufactures more than 120 different sizes and types of pliers and hand tools at its facilities in Meadville, Pennsylvania. From the Manufacturer The Channellock 818 18-Inch Adjustable Chrome Coated Wrench has longer jaws that grip better, avoiding slippage or nut round off. Measurement scales (in. on front mm. on reverse) are handy for sizing nuts, pipe and tube diameters. Greater jaw capacity supports larger nuts and bolts. Thinner jaws for greater access in tight spaces. Precise jaw design grips tight the first time, every time. Four thread knurl and non-protruding jaws provide greater capacity; minimal head width improves performance in confined spaces. Made in Spain to the highest quality standards of Channellock.