Sheet Capacity: These double loop wire binding spines can hold up to 220 sheets of paper(20lb,80gsm). High Quality: The binding wires are made from high-quality wire that are sturdy and allow you to compile paper sheets with ease and store for a long time. Perfect Size: Each wire binding spine measures 1 inch in diameter and 0.8mm in thickness. Each spine has a 2:1 pitch and 21 double loops; 360-degree rotation. Binding wire: Use these double loop wire binding spines to bind important documents, files, or reports for an upcoming presentation or project. Compatible with most wire-binding systems (2:1 pitch and 21-hole pattern) TOTiyea Double Loop Wire Binding Spines are made from high quality binding wire that are sturdy and allow you to compile paper sheets with ease and store for a long time.
The wire binding spines are 11 inches in length with 2:1 pitch and 21-loops. The binding wires are designed to fit with Letter sized paper. Also, they can easily be cut with wire cutters to accommodate books with spines smaller than 11 inches long.