Cooper Hand Tools, a division of Cooper Industries, Inc., manufactures and markets many well-known brands of hand tools, chain, and electronic soldering products, including Campbell (R) chain, Crescent (R) brand wrenches and pliers, Lufkin (R) measuring tools, Nicholson (R) files and saws, Plumb (R) hammers, H.K. Porter (R) bolt cutters, Weller (R) soldering products, and Wiss (R) snips. Headquartered in Raleigh, North Carolina, Cooper Hand Tools has manufacturing facilities in 16 international locations, and has approximately 4,400 employees worldwide. Second set of teeth cut in opposite diagonal direction and on top of the first set. First set of teeth is known as the overcut, second is known as upcut. Upcut is finer than overcut. Double-cut file is used with heavier pressure than the single-cut and removes material faster from the workpiece.