Feature: 1. [Versatile Binding Machine] This 30 hole binding machine accommodates various paper sizes like letter size (30 holes), A4 size (30 26 holes), A5 size (20 22 holes). 2. [Adjustable Margin] The binding machine features margin adjuster, allowing you to easily customize paper margins to 2.5mm, 4.5mm, or 6.5mm for tailored binding needs. 3. [High Punching Capacity] The punch binder can punch up to 15 sheets of 80g paper at once by applying steady pressure, simplifying and speeding up your binding tasks. 4. [Alloy Steel Material] Crafted from alloy steel material, this book binding machine offers long lasting durability and resilience ensuring its usability. 5. [Wide Application] This binding machine is ideal for graphic and text stores, schools, offices, printing rooms, or conference documents binding. Specification: Item Type: Binding Machine Material: Alloy Steel Punching Ability: 15 sheets of 80g Binding Ability: Depending on the size of the consumables Applicable Paper Width: ≤300mm Hole Diameter: Approx. 5.5mm / 0.22in Blade Ability: 30 hole blade Margins: Approx. 2.5mm / 0.10in, 4.5mm / 0.18in, 6.5mm / 0.26in Hole Spacing: Approx. 9.5mm / 0.37in. Package List: 1 x Binding Machine1 x Handle1 x User Manual1 x Testing Paper