Description
3:1 Twin Loop Wire Binding Elements
3:1 twin loop wire binding elements are premium metal Wire-O spines designed for thin to medium-sized documents. With three holes per inch, 3:1 pitch wire provides a clean, professional finish while allowing documents to lay flat and rotate 360 degrees.
Also known as double loop wire or Wire-O binding, 3:1 pitch is the preferred choice for manuals, booklets, presentations, and calendars with smaller page counts.
Professional Appearance & Secure Hold
Durable metal construction
Tamper-resistant binding
Clean, polished presentation
Strong page retention
3:1 wire binding delivers a refined commercial look ideal for corporate and print shop applications.
Ideal For Document Thickness
3:1 pitch wire is recommended for thinner books, typically:
Up to approximately 9/16″ thick
Lower page counts
Smaller manuals and reports
For thicker books, see our 2:1 Twin Loop Wire.
Lay-Flat Performance
Documents bound with 3:1 twin loop wire:
Open completely flat
Rotate a full 360°
Provide easy writing and photocopying
Common Applications
Manuals
Catalogs
Calendars
Reports
Presentation booklets
Refer to the sizing chart below to determine the correct wire diameter for your document thickness.
With this binding method.
- A user inserts the metal “C” shape element binding on to the punched sheets.
- The HD8000 Wire CLOSING Unit , or The WBM Closer is used to squeeze the elements together and compressed until it becomes round.
