Chicago Pneumatic CP835 Heavy Duty Air Nibbler - Pneumatic Nibbler with Four Different Cutting Positions. Shears and Nibblers Heavy-Duty Nibbler Tool: air nibbler is ergonomically designed for precise cutting of steel and aluminum metal. Pneumatic nibbler is a perfect tool for accurate cutting with superior performance in tight corners and circles Professional Metal Nibbler: this air operated nibbler is easy to operate and control. The handheld tool can be used for nibbling plastic, tin, aluminum, and other metals Easy-to-use: air powered tool provides easily access to punch and die for quick replacement. Rear exhaust of this pneumatic nibbler directs the air away from work area Portable Nibbler: lightweight hand tool features a Lock-off lever for low-speed starting, providing enhanced user control. Pneumatic tool allows the user to place die in four different cutting positions Specifications: powerful air nibbler delivers 2750 strokes per minute. Rugged nibbling head and.177 in. diameter punch of the pneumatic nibbler cuts steel up to .060 in. (16 gauge) and aluminum up to .102 in. (10 gauge)