What's happening? Sheetmetal with Punch tool Tab circular patterned

Sheet Metal Screw Punch 10mm Hole starting ,Popular among Electricians, Plumbers etc Special chrome alloy, gun metal finish Capacity:

How to make a sheet metal punch, I needed a 30 mm sheet metal punch So I made my own

sheet metal slot punch Features Lightweight and maneuverable Make holes in sheet metal and vinyl plastic fast and easy Replaceable punch and die installs on the job Adjustable

indiana bones slot Hole Punch Punches ; Eastwood Deep Throat Hand Held Power Punch Tool Kit For Sheet Metal Hole Rivet · $ Free shipping 336 sold ; Pneumatic Air Panel