[18 Pcs Set] Each pack includes 18 spiral binding coils, ensuring long term productivity for all your binding projects, enabling you to effortlessly bind papers and store them securely.
[4:1 Pitch Compatibility] The spiral binding coil features 4:1 pitch, making it compatible with any binding machine that punches 4 holes per inch.
[Versatile Application] Very suitable for letter sized paper (8.5 x 11 inches), the length of the spiral coil can be easily cut with scissors. Very suitable for engineering documents, business projects, office documents, and university speeches.
[360 Degree Rotation] This binding coil can rotate 360 degrees, making it easy to flip pages and read, making it easier to handle binding items.
[High Capacity] The plastic spiral binding coil has a diameter of 38mm and can accommodate up to 310 sheets of paper (A4, 70g), making it easy to add and remove pages.
