½-Inch Black Plastic Discbound Expansion Discs for Custom Notebook and Planner - Compatible with Circa, Arc, TUL (Set of 22)
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.
Bottom line: The ½-Inch Black Plastic Discbound Expansion Discs for Custom Notebook and Planner - Compatible with Circa, Arc, TUL (Set of 22) is a solid pick with broad community endorsement in the PC & gaming hardware category, priced around $12.95, rated 4.2★ across 580 verified Amazon reviews. A solid choice — worth comparing against one or two close alternatives first.
Optimize your organization and enhance your custom notebook setup with Eleven Discs Black Plastic Expansion Discs. This versatile pack of 22 discs is essential for those crafting their own discbound systems, compatible with brands like Levenger Circa, Staples Arc, and more. These discs are engineered for reliability, enabling you to easily manage personal, academic, or professional notes. With their robust capacity and flexible compatibility, these discs are perfect for expanding your notebook to fit all your organizational needs.
SpecPicks Verdict
SpecPicks classifies Eleven Discs ½-Inch Black Plastic Discbound Expansion Discs for… as a solid pick with broad community endorsement in the PC & gaming hardware category, based on 580 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Eleven Discs's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.2★ customer rating
- ✓ Backed by Eleven Discs's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- WIDE COMPATIBILITY – Our ½, ¾, and 1-inch discs are compatible with popular discbound systems like Eleven Discs, Levenger Circa, Staples Arc, Office Depot TUL, Martha Stewart, Happy Planner, and other customizable disc bound systems, covers, and accessories.
- BULK QUANTITY SAVINGS – Contains 22 expansion discs, ideal for building two junior or letter-size discbound notebooks, offering great value for personal and professional use.
- DIMENSIONS – Features an inner diameter of 1/2 inch (0.5 inch) and an outer diameter of 0.71 inch (18mm).
- SHEET CAPACITY – Capable of holding 50 sheets of our heavyweight 32lb refill paper or 70 sheets of standard copy paper to suit your journaling, notetaking, scrapbooking, storage, or archival needs.
- HIGH-QUALITY MATERIAL – Constructed from premium, lightweight ABS plastic, offering durability and ease of use for everyday handling.
Full Specifications
| Size | ½ Inch |
|---|---|
| Brand | Eleven Discs |
| Color | Black |
| Weight | 32lb |
| Material Type | Plastic |
| Manufacturer Part Number | PD-18BK |
Ready to buy?
Eleven Discs ½-Inch Black Plastic Discbound Expansion Discs for Custom Notebook and Planner - Compatible with Circa, Arc, TUL (Set of 22) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.