12pcs round steel hole punches for leather, watch straps, canvas, eyelets. Useful tools: The hollow punches are made of durable heat-treated carbon steel, their cutting edges ensure clean and precise holes. They are used for drilling precise holes in gaskets, leather, canvas, plastic, vinyl, rubber and other soft materials. Suitable for: hole punch set for leather, watch straps, gasket tape, shoes, fabric, canvas clothing, eyelets, etc. Application steps: 1. Choose your leather; 2. Place on an impact-resistant surface (wood shavings are best). Hold the tampon firmly. 4. Punching machine with hammer. Size: 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 15mm. Material: carbon steel. Package includes: 1 hollow hole punch (total 12pcs in 12 sizes) Quantity: 12pcs.