The Channellock 442 is a 12-inch tongue-and-groove plier with V-shaped jaws that grip conduit, pipe, and round fasteners on four points of contact — a significant upgrade over flat jaws for anything cylindrical. The patented undercut groove locks through the adjustment positions and resists the slip-to-next-setting failure that happens on cheap adjustable pliers when torque is applied at an angle.
It’s sized for plumbers, maintenance crews, and mechanics working on larger fittings — 1-1/4 to 2-inch compression nuts, traps, and flare fittings where a 10-inch plier runs out of jaw capacity. The high carbon steel body stays rigid under heavy torque and the protective coating keeps rust off the working surfaces in wet jobsite conditions.
Channellock has been forging pliers in Meadville, Pennsylvania since 1886 — the same small American factory, now five generations into the same family. The company is known for the blue-handled tongue-and-groove pliers that defined the category, and every tool in the core line is made in the USA from forged high-carbon American steel.
