The glass filter tips is a small hollow cylinder that is rolled at the bottom end of the connection to serve the same purpose as a paper filter but is easy to re-use and is stronger. One of the main advantages of glass paper is the ability of paper to filter the flowers that you smoke when your joints are not packaged properly.
Glass filters have the same function for rolling the filter tips like the paper filters but with a few additional benefits:
Convenience: The glass filter will no longer scratch an appropriate piece of scrap paper, or you don't need to remember where you placed the crutches. Filters also make rolling easier by providing rigid attachment points for rolling.
Smell: One of the worst things about joints is that your fingers let it smell because the smoke directly hits your skin when inhaled. Glass filters form a barrier that reduces pouring. Your skin still absorbs the smell of smoke around it, but not that close.
Classic: Connections and blunts, rotated well with the end of the filter, just look better. There is also the fact that washing makes it much cleaner than sucking smoke through the paper. The aroma of your joints will also be better, making this experience more classy than normal joints.