Straight Pneumatic Flanger-Punch 5/16" (8mm)
Product Review (submitted on January 26, 2010):
Recently purchased this tool to help with some sheet metal replacement around the shop. I don't know how we did without it. It is very quick and versatile. It makes easy work of punching holes in 18 and 20 ga. steel. The swivel head design makes it easy to get into tight areas.