Enhance your document binding projects with this high-capacity Spiral Binding Coil set, designed for secure and professional-quality binding. Made from durable PVC plastic, each coil measures approximately 38mm (1 1/2 inch) in diameter and can hold up to 310 sheets of A4 size paper (70g), providing ample capacity for thick documents. The 4:1 pitch design ensures compatibility with any binding machine that punches 4 holes per inch, making it a versatile choice for both personal and professional use. Key Features: · High Capacity Binding Coil: Holds up to 310 sheets of A4 (70g) paper, perfect for binding large reports, manuals, or presentations with ease. · 4:1 Pitch Compatibility: Designed to fit binding machines with 4 holes per inch, ensuring broad compatibility and convenience. · 360 Degree Rotation: Allows bound pages to rotate completely, enabling smooth page flipping for easy reading and handling. · Set of 18 Spiral Coils: Supplied in a pack of 18, providing long-term use and efficiency for all your binding needs. · Versatile and Customizable: Ideal for letter-sized paper (8.5 x 11 inch), and the coil length can be trimmed with scissors to suit different document sizes. · Durable PVC Material: Provides strength and flexibility to maintain document integrity while allowing easy binding and unbinding. Specifications: · Material: PVC Plastic · Binding Diameter: Approx. 38mm / 1 1/2 inch · Binding Capacity: Up to 310 Sheets (A4, 70g) · Number of Loops: 48 · Pitch: 4:1 (4 holes per inch) Package Includes: · 18 x Spiral Binding Coils This Spiral Binding Coil set offers a reliable and convenient solution for binding thick documents securely, making it an ideal choice for business reports, presentations, university projects, engineering documents, and everyday office use. Achieve professional-looking results with ease and maintain organized, easy-to-navigate documents.