QUALITY MATERIAL – Each velobind binding spine offers security and durability at an affordable price. These spines are perfect for reports, presentations and books, as well as other binding projects that require an additional level of sophistication. PERFECT FOR COMPACT DOCUMENTS – Spines are great for creating compact reports, books, or other documents, as any excess pin length is removed when bound. They work especially well for documents that may be filed, stacked or mailed. EXTRA SECURITY – Spines offer higher security than other binding spines. The finished project cannot be taken apart, as the spine is fused together when bound around the document. LENGTH, PINS & SHEET CAPACITY - These spines are 11-inches in length and designed to be used with Letter sized documents. Each spine includes 11 pins, each 1-inch in length. Velobind spines hold approximately 250 sheets of 20# paper.