5/16" 3:1 Twin Loop Binding Wires (100/bx) Color:Black they come in an array

they come in an array of attractive colors

4 rolls of 1

All Premium binding coils have a 4:1 pitch (4 holes per inch) and are fully compatible with any matching 4:1 pitch coil binding machine

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5/16" 3:1 Twin Loop Binding Wires (100/bx) Color:Black they come in an arrayWire O binding wire, also called "duo wire" or "twin loop binding wire," is a versatile binding spine that offers security and durability, but with style and affordability. These wire spines are perfect for reports, presentations, calendars, sketchbooks, as well as other binding projects that require an additional level of sophistication. These 3: 1 pitch wire O binding wires are designed to fit the distinct hole pattern of a 3: 1 pitch wire binding