Working with leather and need to set those domed rivets or snap fasteners? This mushroom-shaped punch tool is exactly what you need. It's a single steel tool with six different punch sizes on its head: 5mm, 6mm, 7mm, 8mm, 9mm, and 10mm. You just rotate it to select the size you need. It's made from solid, heat-treated carbon steel so it's tough and won't bend easily. The mushroom dome shape gives you good leverage to punch clean holes through multiple layers of leather or fabric with less effort. The tool itself is about 9.8cm (3.85 inches) long, so it's comfortable to hold. Essential for making belts, bags, wallets, or any leather project that uses rivets, snaps, or eyelets. A simple, reliable tool that does the job well.