The 12.7mm Wire Spiral pack includes 100 high-quality double-loop metal binding coils, designed for securely binding A4 documents. With a diameter of 12.7mm (approximately 1/2″), these coils are suitable for binding documents up to approximately 91–100 sheets of 80gsm paper, making them ideal for thicker presentations, reports, manuals, and notebooks.

Each wire spiral features a 3:1 pitch (32 loops per A4 sheet), offering a clean, tight, and professional finish. Constructed from durable metal and often coated with a smooth nylon finish, these spirals are both flexible and strong, ensuring long-lasting document integrity.

✅ Key Features

• Diameter: 12.7mm (approximately 1/2″)

• Pitch: 3:1 (32 loops per A4 sheet)

• Sheet Capacity: Up to 100 sheets (80gsm)

• Material: Durable metal with optional nylon coating

• Quantity: 100 coils per pack

• Color Options: Available in black, white, silver, and more

• Compatibility: Works with standard 3:1 pitch wire binding machines