Don't want to go for somber black wire spines? Renz has thought of the perfect solution for you. Their dark gray charcoal twin loop wire binding supplies are high quality, and they bright a sense of sophistication to your binding process. And these wire spines are easy to use-all you need is the right wire binding machine and a wire closer, and you're set. We have both 2:1 and 3:1 pitch with various sheet capacity sizes available. Twin loop wire bound documents are easy to use to with their 360 degree rotation-you can fold them over for easy note-taking or photocopying. Get these wires today.