[Flat Slope]Using high elastic spring and comfortable flat slope. The grip is firm, and the force is easy to transmit. Women and children can easily open holes with light force. You 't feel tired even if you use it for a long time. [With a spare spring that can be used for a long time] Another spring is included to minimize the force of drilling. When the spring force weakens, it can be used for a long time just by replacing it. [Equipped with Scale for Measuring the Hole Spacing]Since the punching distance can be adjusted, the hole spacing can be shortened and the material can be used without waste. Since holes can be uniformly punched, the punched paper can be reused as a design. It's an eco-friendly and fun . [3 Sizes] 3 hole sizes are available according to the application. It's fine if you want a slightly bigger fist, but you can achieve it! [Product Features] Can be opened with light force: spring helps to save effort 8mm hole diameter can be opened evenly: hole spacing is uniform, saving material No spare spring Included: replaceable spring,, Weight: 0.50265395736 Pounds, Manufacturer: Awwertse