Unique Bargains Smooth Portable Plastic Rings Comb Binding Spines 10 Pcs Black 1"

These plastic binding comb spines are suitable for various office occasions, providing great convenience for file storage, document binding, paper collection, etc. It is a portable office and learning product. The binding comb spines are made of durable, sturdy plastic to ensure long-term productivity of all binding projects, allowing you to easily bind documents and keep them for a long time. These binding comb spines are designed with 21 rings and are suitable for any 21-hole rubber ring binder. The binding spiral provides a 360-degree page-turning rotation function for easy reading.