2:1 binding wires means that the wires will thread through 2 holes per inch of a document (typically 16 loops for A5 & 23 for A4). The looped wire will therefore be spaced further apart than other pitches. 2:1 binding wires can accept more sheets of paper and therefore tend to be the most popular of the two pitches.

3:1 binding wires (if read aloud would be three to one) means that the wires will thread through 3 holes per inch of a document (typically 24 loops for A5 & 34 for A4). The looped wire will therefore be spaced more closely together than the 2:1 pitch giving the wires a much tighter look. It is worth noting that 3:1 binding wires can accept fewer sheets of paper than 2:1 wires.

Colour Available: Black, White, Silver, Blue, Gold, Red, Green and Bronze
Packing: 100pcs/box