Feature 1280 SHEET CAPACITY: The plastic spiral binding coil has a diameter of 32mm and can hold up to 280 sheets of paper (A4, 70g), allowing easy addition and removal of pages. 24:1 PITCH AND 48 TEETH: The spiral binding coil has a 4:1 pitch and is compatible with any binding machine that punches 4 holes per inch. 3SET OF 20: 20 spiral binding coils in the package, ensuring long term productivity for all your binding projects, making it easy to bind and store papers for a prolonged period. 4360 DEGREE ROTATION: The plastic spiral binding coil allows for 360 degree page flipping, making it easier to read and allowing projects to lay flat. 5SUITABLE FOR LETTER SIZED PAPER: These 48 teeth binding coils are perfect for letter sized papers (8.5 inches x 11 inches), and the length can be easily cut with scissors as per individual requirements. Ideal for engineering documents, business projects, office documents, and university presentations.Item Type: Plastic Spiral Binding CoilsMaterial: PVC Plastic Binding Diameter: Approx. 32mm / 1.26inBinding Capacity: 280 sheets (A4, 70g)Number of Teeth: 48 teethPitch: 4:1Applicable Paper Size: Approx. 8.5 x 11in / 21.59 x 27.94cm .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List20 x Plastic Spiral Binding Coils