Klein Tools has been the electrician’s brand of choice since 1857, and the American-made products in their catalog still roll out of Klein facilities in the U.S. heartland. The fit, finish, and heat treat on these tools is the benchmark the rest of the hand-tool industry has chased for over a century — and the reason pros carry Klein on the belt for a career, not a season.
The D5057B is Klein’s 7-inch Klaw pump pliers — a compact tongue-and-groove design with a tight-fitting jaw that holds its adjustment under load instead of slipping to the next groove under torque. The jaws are heat-treated for long service life, and the slim profile fits into panel boxes and tight plumbing work where a full-size channel lock won’t land.
Klein Tools is headquartered in Lincolnshire, Illinois, with manufacturing across the U.S. Midwest. The company has been family-owned and operated for six generations and backs its American-made tools with a lifetime guarantee against manufacturing defects.