Gizeh Charbon-Charcoal-filters for your roll your own smokes. These filter plugs have activated charcoal in their center that filters an amazing amount of the harshness of any tobacco out of each puff of your smoke. If you want a very smooth smoke, give these a try. They come in a convenient box of 100 filters that are 8mm in diameter and 15mm long. They also work great for a pipe, just need to be sure the size is a fit.