Wire Binding Machine YD-WM770 Binding Forms: double oo wire & hard comb; Max. Binding Thickness: 1"(25. 4mm) wire; Max. Punching Thickness: 20 pages(80g); Binding Wideth: A4; Pitch: 3: 1 (34 holes); Margin Ajustable: 2. 5-6. 5mm; Hole Shape & Size: round shape, 5. 0mm; Push & Pull Pins: 34 pcs included; Outer Structural Size: 494x394x248mm; Net Weight: 11. 5kgs.