You can also search on Panduit's product catalog to find what you'd like - it's a little messy, but here's the direct link to the listings on their site. We got labels that are designed for Cat5e, which still work pretty fine on larger Cat6/6a cables. As an add-on to my other comment, here are some starting points for the self-laminating labels I was talking about (had to look up what we've used in the past):
