AIR PUNCH and FLANGE TOOL. The first operation will crimp (flange) up to 14 gauge material together. Then turn the head of the tool to 180 degrees to punch a7/32" (5.5mm)clean hole for your welding operation.

Brand: Unbranded
Hole Punch Diameter: 5.5mm.
Cutting Capacity: 14 Gauge
Manufacturer Part Number: na
Air Inlet Size: 1/4in.