Multi-color paper leaf binder rings, tight lock design makes your books organized, not scattered after collapse, easy to operate. Suitable for binders, study or note card, classroom, office, home; Fastening any size document stack and keys and . Feature - ColorAssorted Color - Material: Plastic. - Size: 3.50X3.50X0.40cm/1.38X1.38X0.16 inch. - Inner diameter: 28mm/1.1 inch. - Specific size details: Our plastic loose leaf ring is 28 mm in inner diameter, it is recommended that the binding thickness should not 28 mm - Various colors provided: 6 different bright colors are available, include blue, red, green, yellow, orange and purple, different colors not only can satisfy your multiple needs, also can help you classify documents according to different colors - Package quantity: You will get 100 pieces multi-color binder rings in diverse colors, sufficient quantity provide for you to use for a long time - Our binder rings can be easily applied for office and home storage - to use: Due to the material of flexible book rings is plastic, which is strong and , it will not crack or split, rings open and close easily, ensure your usage. Package list: loose-leaf rings