Channellock is an American company that produces hand tools. It is best known for its pliers—the company manufactures more than 120 types of pliers—particularly its eponymous style of tongue-and-groove, slip-joint pliers. Its pliers have distinctive blue grips; the company has been using the same trademarked shade of blue since 1956.
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It also produces cutting pliers, linemen's pliers, long nose pliers, adjustable wrenches, screwdrivers, nutdrivers and special purpose pliers, as well as multi-function tools for the fire service and other first responders. All of its pliers are manufactured at one of its two facilities in Meadville, Pennsylvania.