Check the listing for details. Wire-O Binding Spines 3/8” diameter 3:1 pitch Twin Loop Double-O (100/pk) BLACK. Color: Black, Condition: New. Listed at 42.09 USD. Wire-O Twin Loop Double-O Binding Spines 3/8” diameter 3:1 box of 100 Black ( each ) Features Metric size: 9.53mm diameter Standard 32 loop Duowire elements for 11” spine Other colors may be available at this price upon request, but all 1 color per 100 count pack: White, Blue, Red or Black High Quality: Meets or exceeds all brands (like GBC, Fellowes, etc.) Has Money Back Guarantee These Oregon Lamination Premium Wire-O binding spines have 32 loops and standard 3:1 pitch for an 11” book edge. These wire bindings are also commonly called Duowire, Twin loop, Double-O, Double Loop and Wire Bind supplies. Other colors may be available upon request, but must be all 1 color per 100 count package. Colors normally available at this price are white, blue, red or black. Oregon Lamination Premium wire bind supplies provide the best price value for quality and have a money back guarantee. Binding with wire does require a wire closer machine. Many wire binding machines have built-in wire closer systems; however, some require a separate wire closer. Provide a professional binding job using Oregon Lamination Premium wire binding supplies. Specifications item code: EW32L308BK Size: 3/8” diameter (9.53mm) Pitch: 3:1 (32 loops on 11” book spine) Color: Black Material: Steel Wire Guarantee: Money back SHIPPING (see Shipping and payments Tab above): You can combine all orders to ship for Free (in the lower 48 states) Note: We may upgrade shipping to either UPS or mail if we determine you will receive the product faster at a similar cost, so if you have a different address for UPS than mail, it's worth your while to provide both addresses. International Buyers: Import duties, taxes and charges are not included in the item price nor shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding. Note: If eBaY checkout does not combine shipping correctly, you can request a revised invoice; however, even if you do pay extra shipping, we will automatically refund shipping charges not combined correctly without even being asked. That's just how we roll (LOL) Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.