Dimensions: 13 cm x 9.5 cm Adjustable Paper Depth: This unique hole punch has an adjustable depth knob and a scale on one side. The maximum depth it can support is 25 mm, making it easy to punch holes without needing to measure for precise punching. Empty Hole Design: The blank design of the punching piece means you can clearly see where the hole is being punched. The punching head has a flat, beveled, round shape, giving the tool a high cutting capacity and creating round holes with a flat, smooth surface. Humanized Design: The ergonomic split handle of the hand hole punch allows you to hold the tool securely with one hand. The integrated, highly elastic spring saves time and effort; you can easily slide left and right across the paper for continuous punching. Easy to use: This high-performance handheld hole punch is simple to operate. Just snap the paper into the punching slot, then close the handle. The slot closes automatically to punch a perfect T-hole. Comes with a spare spring for easy maintenance and replacement. High-quality material: Made of high-quality chrome-plated zinc alloy and iron, resistant to corrosion and rust. Suitable for paper, plastic bags, plastic cards, wood panels, or other non-metallic materials less than 4 mm thick.