1-1/2" Silver Wire-O Binding Supplies [2:1 Pitch, 280 Sheets] (100/Bx)
173.87 NewCondition InStock

1-1/2" Silver Wire-O Binding Supplies [2:1 Pitch, 280 Sheets] (100/Bx)

Item #: 27112SILVER
Brand: James Burn
  • Available in select colors and sizes.
  • 3:1 pitch (pronounced "three to one" and with 3 holes per inch).
  • 2:1 pitch (pronounced "two to one" and with 2 holes per inch).
  • 11" Long
Additional Sizes Below
  • 85+ Years Experience
  • Free Shipping $75+
  • Brand New
  • In Stock



CLEARANCE SALE - Available Only While Supplies Last
We're overstocked on Wire-O twin loop binding supplies! Check out our variety of clearance wire binding supplies and don't delay; these deals are only available while supplies last. Wire-O binding is one of the most popular punch-and-bind solutions because of the high quality and professional finish of the bound documents. Often called twin loop or double-o, these wire binders are official James Burn wire brand, so you know you are getting the highest quality wire binding spines available on the market. The colors and sizes available will vary day-to-day, so if you don't see the one you need, click here to shop our full variety of wire binding supplies. Pair them with your 3:1 and/or 2:1 pitch Wire-O binding machine for a complete wire binding solution.


ManufacturerJames Burn
Manufacturer Part NumberWIRECLEARANCE GRP
Capacity*Varies Depending on Size
View the Chart in the Product Description for Details
Sheet CapacityVaries Depending on Size
View the Chart in the Product Description for Details
Binding StyleWire-O Binding
Sheet Size8 ½" x 11" [Letter Size]
Length11" Long


Clearance Wire-O binding supplies is available in select colors and sizes in either a 3:1 pitch (pronounced "three to one" and with 3 holes per inch) or a 2:1 pitch (pronounced "two to one" and with 2 holes per inch) options. Depending on the capabilities of your wire binding machine, you can choose either pitch or both. Use the wire binding capacity chart below to determine what the best wire binding size for your needs is. And remember, clearance wire bindings are only available while supplies last, so don't delay... buy wire-o twin loop binding supplies online today.

Wire-O Binding Capacity Chart:

How to choose a wire binding size:
  1. Take the entire book being bound and lay it flat on a table, including the covers
  2. Don't press the stack down, and measure the thickness of the binding edge
  3. Take the measurement and add 1/8" - that will be the size of the binding spine recommended
Wire DiameterPitch (Holes per Inch)**Sheet Capacity*Book Thickness*Quantity / Box
1/4"3:1 or 2:111-25 Sheets1/8"100 Wires / Box
5/16"3:1 or 2:126-45 Sheets3/16"100 Wires / Box
3/8"3:1 or 2:146-65 Sheets1/4"100 Wires / Box
7/16"3:1 or 2:166-80 Sheets5/16"100 Wires / Box
1/2"3:1 or 2:181-100 Sheets3/8"100 Wires / Box
9/16"3:1 or 2:1101-120 Sheets7/16"100 Wires / Box
5/8"2:1121-145 Sheets1/2"100 Wires / Box
3/4"2:1146-165 Sheets5/8"100 Wires / Box
7/8"2:1166-185 Sheets3/4"100 Wires / Box
1"2:1186-210 Sheets7/8"100 Wires / Box
1 ⅛"2:1211-235 Sheets1"100 Wires / Box
1 ¼"2:1236-260 Sheets1 ⅛"100 Wires / Box

* Note: Sheet capacities are approximations, determined using standard 20 lb. bond copy paper; the actual sheet capacity will vary depending on the materials being bound.
** Note: The smaller 2:1 pitch wires from 1/4" up to 9/16" are a special-made wire, and are not available in all colors.

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