Feature: 1. SIZE SPECIFICATION: Wire binding machine is suitable for letter size, A4 size, A5 size. And you can easily customize the paper margin of 2.5mm, 4.5mm, 6.5mm to create professional looking works(cannot be punched with laminated paper) 2. HUMANIZED HANDLE: Simply apply steady pressure to punch holes in up to 12 sheets of 80g(paper thickness≈20lb) paper at a time. Maximum binding 120 sheets(80gsm 20lb) 3. WIDE RANGE OF USE: Bind with any 3:1 pitch accessory, such as 3:1 pitch coil binding spine, 3:1 pitch click binding spine or 3:1 pitch wire O binding ring, suitable for multi scene 4. USEFUL AND PRACTICAL: Spiral coil binding machine adopt two hand handle design, the pressure ring is better to apply force, the force is more uniform, and the hole punching is easy 5. SCOPE OF APPLICATION: Spiral binding machine is widely used in graphic shops, schools, offices, printing rooms or conference documents binding Specification: Item Type: Binding Machine Applicable Consumables: Double coil Applicable Paper Width: ≤300mm Punch Capacity: 12 Sheets(80g paper) Binding Capacity: 120 Sheets(80g paper) Punch Size: Approx. 4.4 x 4.4mm / 0.17 x 0.17in Hole Spacing: Approx. 8.47mm / 0.33in Ability To Draw Knife: Can not draw knife Margin: Approx. 2.5mm / 0.1in, 4.5mm / 0.18in, 6.5mm / 0.26in Ring Size Range: Approx. 4.8 ~ 14.3mm / 0.19 ~ 0.56in . Package List: 1 x Binding Machine1 x Testing Paper1 x User Manual