About the product
- Versatile Compatibility: Fits both A4 size (8.3\" x 11.7\") and U.S. letter size (8.5\" x 11\") paper. For U.S. letter size, simply trim off two rings with scissors.
- High Binding Capacity: Binds up to 90 sheets (80g/20lb paper), perfect for reports, presentations, and manuals.
- Colorful Variety: Includes 30 spines in multiple colors: black, white, pink, transparent, orange, and blue.
- User-Friendly Design: Reopens and closes for easy page addition or removal. Compatible with 3:1 pitch binding machines and 3:1 pitch paper, meaning there are 3 holes per inch. Hole spacing is 8.4mm from center to center.
- Flexible Binding Margins: Margin size affects the number of sheets that can be bound; 3mm margin for 2-90 sheets (80g/20lb paper) and 6mm margin for 60 sheets (80g/20lb paper).
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