Binditek 100 Pack Plastic Spiral Binding Coils, 6mm(1/4"),30 Sheet Capacity,4:1 Pitch, Black Binding Spirals,Christmas Gift for Students and Coworkers

Binditek Plastic spines/spiral /coils are made by precision equipment from well-experienced manufactory. Products are created by high-quality raw material to achieve hard form and good color fastness over time. Binding coils are used in engineer file, business project, office documents, university presentations and more. A lay-flat design with the ability to flip pages 360?? from front to back. The 48 loops plastic coils in black fits letter sized paper(8.5x11 inches) 4:1 pitch 4 holes per inch. Compatiable with any standard 48 loops plastic coils-binding system