Black 2:1 Wire-O Twin-Loop Binding Spines (Box of 100)

2:1 pitch wire-o binding supplies feature 2 loops per inch and pair with any 2:1 pitch wire binding machine. Also called twin loop or double-o wires, these binding spines offer a classic and clean metal finish that loops great and offers full 360° page turning. 2:1 pitch Wire-O comes in sizes from 5/8 inch up to 1-1/4 inch, which means it can be used for books from 120 to 260 sheets in size. Some select colors are also available in specialty smaller sizes from 1/4″ to 9/16″. All sizes are available in bulk, 100 wires per box.

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