Features and Benefits: Punch designed for easy replacement Performs hole punching and panel crimping - cuts fabrication time in half Features a rotating head for convenient use Every pull of the lever delivers a single punch or a single flange crimp with precision control Forms an offset crimped edge on sheet metals for no-bump lap welds Specifications: Punch capacity: 5/16" Piston stroke: 5/32" Overall length: 7-1/2" Net weight: 2-1/4lbs. Air inlet thread: 1/4" NPT Air hose I.D. size: 3/8" Avg. air consumption: 4cfm Noise level: 50 dBA @ 90 PSI