Features: 1) Special gauge for determining the O-wire size correctly 2) Mechanical and ergonomical design result in stably punching, never overturn 3) Built-in magnet and emery at wire closing device which makes your presentation steady when doing wire binding Specifications: 1) Binding system: 34-loop O-wire 2) Max. punching speed: 12 sheets/time 3) Max. binding speed: 16mm (150 pages) 4) Special functions: bound, wire reopen