Packaging Includes: 12 colors plastic mini discs binding ring expansion discs for diy notebooks planners, each color of 10, a total of 120. Material: Discbound expansion discs are made of high-quality ABS plastic, which is no toxic and harmless, and the surface is smooth and will not damaging the paper. Expansion discs: The binding discs size is 0.61x 0.22inch/1.55 x 0.55cm, which is small and lightweight, easy to store to extend your own notebook or planners with these discs. 12pcs Color Combination: these discbound discs contains 12 colors, including green, blue, brown, dark blue, yellow, black, brown, white, orange, red, pink, rose red. You can classify and manage different recorded content. Wide Application: Binding ring discs are suitable for arranging your papers, documents, notebook pages, paintings, business card bags, photo bags, file bags