Key Specifications/Special Features: 2-, 3- and 4-D rings with 1 to 4 inches PVC cover and cardboard inside Available in different width (1, 1.5, 2 and 3 inches) With different clip inside (2-, 3-, 4-D ring binder) A4 size Dimension for d ring binder: 315 x 275 x 32mm for one inch 315 x 275 x 42mm for 1.5 inches 315 x 275 x 60mm for 2 inches 315 x 275 x 80mm for 3 inches 315 x 285 x 92mm for 4 inches