Hole Punch Size: 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm Great for punching and repairing holes in leather, vinyl, tents, tarps, thin metal sheets & crafts. Including 210mm hole punch, 150mm eyelet plier, 150mm press stud plier, with a number of grommets and button snaps. Commonly used for punching round holes in thick paper, leather, plastic, rubber, canvas, cardboard and similar materials. This hole puncher is made of manganese steel that is known for high impact strength, and thus guarantees optimum wear and sharp cutting properties.