There are totally 40 pieces plastic mini discs in 4 different colors, sufficient quantity to meet your needs during work, school or daily life. The multi color plastic binding rings can be arranged flexibly, easy and convenient to increase or decrease notebook pages, without damaging the paper, you can classify and manage different recorded content, different color for different kinds of files. Features - Color: Purple, Blue, Orange, Yellow. - Material: ABS. - Size: 3.50X3.50X0.40cm/1.38X1.38X0.16inch. - The binder rings are made with quality plastic, safe and sturdy. Small and lightweight making them easy to store, apply or carry out for a business trip. - Multi-color paper leaf binder rings make your books organized, not scattered after collapse, easy to operate. - You can classify and manage different recorded content, different color for different kinds of files, you can also mix different colors to create your book. - Suitable for binders, study or note cards, classroom, office, home; Fastening any size document stack and keys and . - Package includes 40pcs loose leaf binder rings, contains 4 different colors. Enough quantity for home use and office use, also suit for children learning use. Package list: binder rings