【Multi-function】 Ideal for use on a variety of surfaces. It is an awesome tool. The punch plier is commonly used for punching round holes in leather, belts, plastic, rubber, canvas, fabric, cardboard, saddles, and similar materials; especially useful as a leather hole punch. It has 6 different sizes, which is perfect for home hobby or commercial use. Hole size dimensions: 2mm, 2.5mm, 3mm, 3.5mm, 4mm and 4.5mm.Can meet the greatest demand.