Neiko 30091A Pneumatic Hole Punch and Flange Crimp Joggler Tool, Pistol Grip | 1/4" NPT Air Inlet, 90-120 PSI Pneumatic joggler tool to crimp flanges and punch clean holes on welding surfaces for panel making, automotive restoration, and construction Intuitively designed with pistol grip and paddle lever; exerts 90 to 120 PSI, is much easier to operate than manual powered hand tools Crimp and punch tool used by auto body shop, metalworking, machining specialists to consistently make quick, precise lay welds Hole punch and air flange uses a standard 1/4-inch NPT air inlet and 3/8" (ID) hose, can be powered by a standard air compressor Specs: 7/32" (5.5 mm) punch capacity; 5/32" (4mm) piston stroke; 4 CFM average air consumption; 3mm openings accommodate up to 12 GA sheet metal; oil port on side for easy maintenance