The standard 3 holes per inch (3:1) is the pitch used for wire binding. You can now use the same punching machine and holes but use our specially made 3:1 plastic spirals instead of wire.

With 3:1 wire binding you are limited 14mm thickness before requiring a larger punched hole. But with our 3:1 plastic spirals you can now bind up to 45mm, extending the function of your current equipment. Ideal for situations where you have punched a book that is thicker than 14mm as you can now use plastic spirals rather than having to reprint.

We manufacture our plastic spirals on site from high grade plastic pellets to ensure we produce the very highest quality.

3:1 Pitch 3 holes per inch 34 loops per A4 sheet