[Enhanced Functionality] Enables a 360-degree page rotation for easier reading and lays flat for convenient use.[High Capacity Binding] Hold up to 115 sheets of paper(A4, 70g) with a diameter of 14.3mm, making it easy to add and reduce paper.[Long-term Productivity] Comes in a box of 100 coils, ensuring productivity for all binding projects and allowing for easy paper storage.[Efficient Binding] Features a 4:1 pitch and 48 rings, compatible with machines that punch 4 holes per inch for quick and efficient binding.[Versatile Usage] Ideal for letter size paper(8.5in x 11in), these coils can be cut to fit individual requirements, perfect for various documents and presentations.Spec:Item Type: Spiral Binding CoilsBinding Diameter: 14.3mm(9/16in)Binding Capacity: 115 Sheets(A4, 70g)Teeth Quantity: 48 TeethRatio: 4:1Package List:100 x Spiral Binding CoilsHow To Use:1. Remove the product from the packaging.2. Install the product.3. Once installed, it is ready for use.