WoneNice Revolving Leather Hole Puncher-2 Years Warranty -Professional Heavy Duty Belt Hole Puncher Tool - Multi Sized Puncher Pliers - Ideal for Belts, Crafts, Card, Plastic, Felt, Rubber etc High quality metal body with black coating to avoid oxidation. Comfortable grip pvc handles designed with non slip gentle cushioning, Ideal for repetitive work. Th 3 Round + 2 Flat + 1 Oval:(round hole) 3.5mm, 4mm, 4.5mm; (flat hole) 6X4mm, 7X3.0mm; (oval) 6X4.5mm Ergonomically designed for the human hand. much less hand strength needed: easy to punch a clean hol For different materials: punches holes leather,plastic,canvas,cardboard,shoe,rubber&polyurethane