eZthings Professional Leather-Craft Punching Tool Revolving Punch Pliers Belt Leather Hole Puncher Round Holes Revolving Punch Pliers for Leather Crafts. Belt Leather Hole Puncher for Leather Arts. Leather craft Hole Punching Tools for Belts. Punch sizes: 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm Heavy Duty Round Punch Heads. Easy to Use Leather craft Punching Tools - A Must For Every Household. Instructions: For best performance - please put a cardboard behind / back of the leather and then punch the hole.