15.9mm 3:1 Wire O Rings (50s)

11″ in length, 3:1 pitch translates to 3 holes per inch for a total of 34 holes.

Diameters starting at 1/4″ up to 5/8″ and are able to hold from 5 to 135 sheets of 80gsm paper.
These wires are compatible with any 3:1 wire binding machine or wire closer.

Standard Colours : Black and White

Other Colours : Blue, Red, Green, Yellow, Bronze, Silver, Nylon and Gold.