For A4 Size: The black 21-ring binding comb is suitable for A4 size paper, and the length can also be cut to personal requirements using scissors.
21 Rings: Plastic binding combs are compatible with any standard 21-ring comb-binding system, suitable for internal reports and functional documents.
Premium Quality: High-quality PVC resin ensures the binding combs won't chip, scratch, peel, or discolor, and they are reusable.
Wide Applications: Binding combs can be used for business projects, office documents, family planning, presentations, restaurant menus, and more. They also make great gifts for teachers, students, and coworkers.