These frosted ProClick spines from GBC give an ubiquitous and professional look to them. They will compliment any style of cover, no matter if it's holding together a report, manual, or other project. We have these spines in three different sizes, which hold anywhere from 10 to 125 pages. We even have half sizes for uniquely sized projects and cassettes of spines, for high volume binding. And I've saved the best for last-ProClick spines have the best editing capability. Even if you've bound your document together, all you need to do is use their zipper tool to open up the spine, add or take out pages, and snap it shut! Don't forget to check out ProClick binding machines and pre-punched paper to move your binding process along!