150 Pack Binder Rings, Compatible with Cinch Binding Machine, Binding Combs, Spiral Coil Binder, 3/8 inch Diameter, 19-Ring, Black

·HIGH QUALITY: made of high quality pvc material, high rebound, no breakage, durable, also can be reused.

·ESSENTIAL FOR OFFICE AND STUDY: Compatible with a variety of bookbinding machines, suitable for producing professional-looking reports, presentations and classroom assignments.

·WIDELY USED: can also be used for binding combs, binding rings and plastic binding coils.

·MATCHING USE:Versatile binding solution that can be used with book binding materials such as binding combs, binding tape, and clear binding covers.

· QUANTITY: Includes 150 3/8-inch diameter black spiral binding coils, perfect for bookbinding projects