The coolest benefit of using GBC ProClick style binding is that you can easily edit on the go-but that wouldn't be very much help without a ProClick zipper tool! That's where we come in. While some packs of spines come with one, you might need some extras. We carry single and 9 packs of these zipper tools from GBC. They'll last through lots of usage, and they are small enough to fit in your desk or briefcase!