Hand-held cutter is air-operated

ERASER Model MR30A hand-held air-operated cutter is ergonomically designed and uses 85 PSI air pressure, creating 617lbs. of cutting force. Device is capable of cutting .130 OD copper, .110 OD steel and .047 OD piano wire. Three blade types are available to provide end cuts, center cuts, or diagonal cuts. Also available for use with the device is an optional combination air filter, regulator and lubricator.  http://www.eraser.com