Posted on

Coil binding machines come in 4:1 and 5:1 pitch—which pitch is better?

The 4:1 pitch is more common than 5:1 pitch and is able to accommodate a wider range of document thicknesses. However, a 5:1 pitch has tighter hole spacing (5 holes per inch, vs 4 holes per inch), making it ideal for thinner books and presentations.