Feature 1Coil Specifications: These binding coils have a diameter of 25.4mm (1 inch), and perfect for adding and subtracting paper, with 215 sheets binding capacity. 2360 Degree Rotation: These spiral binding spines allow for 360 degree page rotation, and the binding items can be placed flat to ensure convenient reading. 3Standard 4:1 Pitch: These plastic spiral binding coils have a 4:1 pitch, which is compatible with any binding machine that punches 4 holes per inch. 4Applicable Paper: These 48 loops binding coils are suitable for letter size paper (8.5 x 11 inches), and the length can be cut according to your needs. 5Wide Application: Includes 35pcs binding spines, perfect for engineer documents, business projects, office documents, and university presentations.Item Type: Spiral Binding CoilBinding Diameter: 25.4mm / 1inBinding Capacity: 215 Sheets (A4, 70g)Number of Loops: 48 LoopsPitch: 4: 1 .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 List35 x Spiral Binding Coils