Easy to UseSheet Metal Hole Punch Tool, professionally designed, you can just turn the screw with a wrench to pull out a hole in the metal ApplicationSheet Metal Punch Hole Punch is suitable for cutting steel plates, stainless steel, sinks, steel plates, copper, aluminum, brass, and more Easy to useBefore drilling, you need to make a round hole in the plate so that the screw can pass through the plate FeaturesHole Cutter Opener, high precision, meticulous workmanship, great fora ratchet, wrench or electric driver MaterialHole Punch is made of steel material, which offers exceptional strength, toughness, and wear resistance Specification: Material: steel Size Chart:2.75cm/1.08inch Package Includes: 1 Sheet Metal Hole Punch Note: Please allow slightly errors due to manual measurement and different monitors.