Binding type
Wire-O (Twin Loop)
Pre-formed double wire loops are inserted through punched holes and closed. Looks more premium than plastic coil.
Advantages
- Opens flat
- Professional appearance
- Pages stay aligned across spreads
Limitations
- Wire can bend permanently if crushed
- No spine text
Best for
- Calendars
- Premium notebooks
- Presentations
- Cookbooks
Frequently asked questions
How many pages can wire-o (twin loop) hold?
Typically about 10 to 300 pages, depending on paper thickness.
Does wire-o (twin loop) lay flat?
Yes (360°).
Is wire-o (twin loop) available with print on demand?
Yes, many POD services offer it.