Features [Versatile Binding Machine] This 30 hole binding machine supports various paper sizes, such as letter size (30 holes), A4 size (30 26 holes), A5 size (20 22 holes). [Adjustable Margin] The binder features a margin adjuster, allowing you to easily customize paper margins to 2.5mm, 4.5mm, or 6.5mm for custom binding needs. [High Punching Capacity] The punch binder can punch up to 15 sheets of 80g paper at a time by applying constant pressure, simplifying and speeding up your binding tasks. [Alloy Steel Material] Made with alloy steel material, this book binder offers long-lasting durability and strength, ensuring its usability. [Wide Application] This binding machine is ideal for graphics and text stores, schools, offices, printing rooms or conference document binding. 1. [Versatile Binding Machine] This 30 hole binding machine supports various paper sizes, such as letter size (30 holes), A4 size (30 26 holes), A5 size (20 22 holes). 2. [Adjustable Margin] The binder features a margin adjuster, allowing you to easily customize paper margins to 2.5mm, 4.5mm, or 6.5mm for custom binding needs. 3. [High Punching Capacity] The punch binder can punch up to 15 sheets of 80g paper at a time by applying constant pressure, simplifying and speeding up your binding tasks. 4. [Alloy Steel Material] Made with alloy steel material, this book binder offers long-lasting durability and strength, ensuring its usability. 5. [Wide Application] This binding machine is ideal for graphic and text shops, schools, offices, printing rooms or conference document binding. Specification: Item Type: Binding Machine Material: Alloy Steel Punching capacity: 15 sheets of 80 g Binding capacity: Depending on the size of consumables Applicable paper width: ≤300mm Hole diameter: approx. 5.5mm/0.22inch Blade Capacity: 30 Hole Blade Margins: Approx. 2.5mm/0.10in, 4.5mm/0.18in, 6.5mm/0.26in Hole spacing: approx. 9.5mm/0.37inch How to use: Take out the product and install it to use. Packing List: 1 x Binding Machine 1 x handle. 1 x user manual (English language not guaranteed). 1 x test paper. Package List 1 x Binding Machine 1 x Handle 1 x User Manual 1 x Testing Paper