Neiko 40410B Hand Flange Punch and Crimping Tool, Swivel Head | 7/8" (22mm) Crimp, 15/64" (6mm) Punch | Punches 18 GA Steel Heavy duty steel construction is versatile and capable of working on multiple types of sheet metal, including aluminum, copper and other ductile materials Lightweight body crimp flanges and punch holes on welding surfaces for panel making and automotive restoration Convenient swivelling head spins around 180 degrees to switch between punching and crimping apparatus for quick rotation Electrical setup functions as an electrician's multi tool with a soft rubber handle and can punch holes in boxes and crimp the end of wires Technical specs include: crimp width 7/8" (22mm); Punch 15/64" (6mm); Swivel head; Max sheet thickness up to 18 gauge (0.8mm)