- US, United States
- May 24th
TruBind 1/2-Inch 2:1 Twin Loop Binding Wires - Pack of 100, Black (EW21L0102-BK) 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. 2:1 pitch wire-o binding wires are designed to fit the signature hole pattern of a 2:1 pitch wire binding machine (two holes per inch = 21 holes per letter-sized sheet).