- US, United States
- May 31st
1/4" 3:1 Black Twin Loop Binding Wires (Qty 100) Wire-O binding wire, also called "duo-wire" or "twin-loop binding wire", is a versatile binding spine that pairs security and durability with style and affordability. 3:1 pitch wire-o binding wires are designed to fit the signature hole pattern of a 3:1 pitch wire binding machine (three holes per inch = 32 holes per letter-sized sheet).
