The 3 PC Hole Punch Leather Hole Punch Steel Hole Punch Metal & grommet Setting Tool Kit is a high quality hole punch kit, which allow you to work on leather, gasket material, rubber, soft metal, thin foil, brass, and screen material. This is a great set for getting the job done and done right. This set includes three pieces ranging 2.5mm 5mm. Place the hollow punch in the material you want the hole in, and then hit the top of the grip. This will create a hole allowing you to do what is needed. Each one of these tube is heat treated and made with high carbon steel. Features & Specifications Fix penta-claw buttons in clothes Hole punch and grommet setting tool is made of drop forged steel and heat treated Pliers with texture finished handle Hole punch tool has interchangeable punch heads and punches clean, neat holes in leather and other soft materials