【Binding Coil Size】The plastic spiral binding coils are 38 mm in diameter and hold up to 310 sheets of paper (A4, 70g), making it easy to add and remove paper.
【PVC Plastic】The spine of this binding is made of premium PVC plastic, which is strong, wear-resistant, resistant to deformation and has a long service life.
【4 : 1 Pitch】This plastic binding comb has 4:1 spacing and is compatible with any binding machine that punches 4 holes per inch. The coils can be easily cut with scissors.
【360° Rotation】This spiral binding coil rotates 360 degrees for easy page turning and reading, allowing you to easily bind paper and store it securely.
【Wide Range of Uses】Suitable for Letter size paper (8.5 x 11 inches), ideal for engineer's files, business projects, office documents, college presentations and more.